All about Chemical kinetics

Answers

Answer 1

Answer:

CHEMICAL KINETICS can also be called as REACTION KINETICS.

CHEMICAL KINETICS is one of the branches of physical chemistry.

Explanation:

CHEMICAL KINETICS describes the speed of chemical species where they transform in new substances by breaking down. After breaking down they form molecular bonds.

Study of a chemical reaction can be stated as CHEMICAL KINETICS.

CHEMICAL KINETICS can be used in real life.

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Related Questions

A resource is being used by a population.

Which graph represents a rapidly diminishing resource?

Responses

Graph A

Graph A

Graph B

Graph B

Graph C

Graph C

Graph D

Graph D

Answers

Answer:

Graph A.

Explanation:

Graph

It represents a constant function

Answer:

graph c

Explanation:

5. Hypothesis #2: If the specimen is nonliving, then cells
(Blank)
be present when the specimen
is viewed through a microscope.

Answers

If the specimen is nonliving, then cells be present on glass slide when the specimen is viewed through a microscope.

The Greek words for little and to observe are the origin of the word microscope. Giovanni Faber first used the term "microscope" on April 13, 1625. With the use of a microscope, we can see tiny objects that would otherwise be hidden from vision. Through the act of magnification, or increasing the picture of the item, microscopes help us view tiny objects.

The lowest distance between two objects that produces two pictures that can be distinguished from one another is the resolution of a microscope. For instance, human eyes' resolution is between 0.1 and 0.2 mm. This indicates that two items that are separated by 0.1 to 0.2 mm may be distinguished by human eyes.

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During glycolysis, what is the source of the chemical energy that is captured in atp?.

Answers

Answer:glucose

Explanation:

Energy released during the breakdown of glucose and other organic fuel molecules from carbohydrates, fats, and proteins during glycolysis is captured and stored in ATP.

How many molecules in 35 g of CO2

Answers

Answer:

35/44* 6.022*10^24

Please mark as brainliest

Explanation:

draw the correct electron-dot structure h2s , hydrogen sulfide, a poisonous gas produced by rotten eggs. draw the molecule by placing atoms on the grid and connecting them with bonds. include all lone pairs of electrons.

Answers

Hydrogen sulfide, H₂S is a colorless gas with a strong odor of rotten eggs.

Hydrogen sulfide may additionally motive infection to the eyes and respiration system. It could also motive apnea, coma, convulsions; dizziness, headache, weak spot, irritability, insomnia; belly disappointed, and if liquid frostbite.

H‐S -H

Hydrogen sulfide is a drab gasoline recognized for its stinky rotten egg odor at low concentrations. It's miles extremely flammable and exceptionally poisonous. Hydrogen sulfide additionally happens obviously in sewers, manure pits, well water, oil and gas wells, and volcanoes.

It takes place certainly in crude petroleum, natural gasoline, and hot springs. Further, hydrogen sulfide is produced via bacterial wreck- down of natural materials and human and animal wastes, e.g., sewage.

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HELP ASPPP PLEASE THANKY OU do 6 and 7

Answers

Since you will want to keep the three small vials of vaccine cold ( between 2 and 8 degree Celsius) for up to 24 hours you will need an exothermic reaction.

An exothermic reaction can be defined as the reaction in which the energy is released in the form of heat. when we kept water in the freezer , water molecules releases the heat to the surroundings and tend to freeze to ice form.

Thus, Since you will want to keep the three small vials of vaccine cold ( between 2 and 8 degree Celsius) for up to 24 hours you will need an exothermic reaction.

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select all the strong bases from the following list. multiple select question. ca(oh)2 h2so4 nh3 naoh koh

Answers

Strong bases are Ca(OH)₂, KOH, NaOH

A strong base is a substances that behave like a base and dissociates completely to give a solution that is composed of its ion and conjugate acid and hydroxyl ion bases are substances that accept hydrogen ion H⁺ from other atom and a strong base is a base that is completely dissociated in an aqueous solution and these compound ionize in water to yield one or more hydroxide ion per molecule of base

So in that given data Ca(OH)₂, KOH, NaOH this is the strong bases because in the OH⁻ hydroxide ion yield one or more hydroxide ion per molecule of base

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explain how water's entropy can decrease when it freezes without violating the second law of thermodynamics. specifically, explain what happens to the entropy of its surroundings

Answers

Entropy of water can decrease when it freezes without violating the second law of thermodynamics because there is increase in the entropy of the surroundings.

How can water's entropy decrease when it freezes?

The reason that the freezing water does not violate the second law of thermodynamics is because even though the system becomes more ordered and has low entropy, energy that is released to the surroundings makes molecules move faster, which ultimately leads to an entropy  increase of the surroundings.

The process of liquid -> solid is exothermic. This implies that heat released in the process causes an increase in the entropy of the surroundings. Therefore, if surroundings are included, then ΔSFreeze+ΔSSurroundings>0, which is in accordance with the second law.

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How does the brain respond to an increase in body temperature?
a) Constricting the blood vessels and reducing blood supply the skin.
b) Dilating the blood vessels and increasing blood supply the skin.
c) Decreasing the amount of ADH so more water is lost in the urine.
d) Increasing the amount of ADH so less water is lost in the urine.

Answers

Answer: B - Dilating the blood vessels and increasing blood supply the skin.

Explanation:

If body temperature rises, blood vessels in the skin dilate, allowing more blood to flow near the skin’s surface. This allows heat to dissipate through the skin and into the surrounding air.

What are the first two quantum numbers for the electrons located in subshell 4d

Answers

The first two quantum numbers for the electrons located in subshell 4d is n=4,l=2

For n = 4, l = 2

Here, n represents the principal quantum number

The d in 4d represents d orbital as determined by the secondary quantum number (l).

The quantum number l tells us the shape of the orbital.

l = 0     s orbital

l = 1      p orbital

l = 2     d orbital

The four quantum numbers specify the orientation of an electron, shape size, magnetic aspect, and energy.Four quantum numbers that specify an electron are n,l,m,sIt also specifies the filling of electrons in an orbital.The filling is governed by Aufbau principle.

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using the ideal gas law, determine how many moles of an ideal gas are required to fill a 1.09 l can at , and 1.00 atm pressure.

Answers

Using the ideal gas law, the moles of an ideal gas required are

Volume = 1.09 L

Pressure = 1.00 atm

Temperature (not given so we take the room temperature) = 25 °C or 298 K

Value of R = 0.0821 atm.L/mol.K

Number of moles = ?

Ideal gas law:

   PV = nRT

Rearrange it for the number of moles (n)

    n = PV / RT

Put the values

    number of moles (n) = 1.00 atm × 1.09 L ÷ 0.0821 atm.L/mol.K × 298 K

    number of moles (n) = 1.09 / 24.46 mol

    number of moles (n) = 0.0446 mol

So 0.0446 mol of an ideal gas is required to fill 1.09 L can.

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using any data you can find in the aleks data resource, calculate the equilibrium constant at for the following reaction. 2nocl round your answer to significant digits.

Answers

The equilibrium constant  for the following reaction. round the answer to significant digits 3.41 × 10⁻⁸.

The reaction is given as :

2NOCl   ----->   2NO   +   Cl₂

The Gibbs energy is given as:

ΔG = ΔG° + RT ln K

at equilibrium ΔG = 0

ΔG° = ∑ ΔG° products - ∑ ΔG° reactants

ΔG° NOCl = 66.3 kJ/mol

ΔG° NO = 87.6 kJ/mol

ΔG°  Cl₂ = 0 kJ /mol

ΔG° = ∑ ΔG° products - ∑ ΔG° reactants

       =  (2 × 87.6 + 0) - (2 × 66.3 )

       = 42.6 kJ /mol

equilibrium constant K = exp (- ΔG° / RT )

                                      =  exp ( - 42.6 / ( 8.314 × 10⁻³ × 298)

                                      = 3.41 × 10⁻⁸

Thus, using any data that can find in the aleks data resource, the equilibrium constant for the following reaction. 2NOCl. The equilibrium constant at for the following reaction. round the answer to significant digits 3.41 × 10⁻⁸.

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In the calvin cycle, if nadph begins to run out, what would be the first compound to accumulate?.

Answers

The first compound to accumulate is 1,3-bisphosphoglycerate.

Carboxylation is step one within the Calvin cycle where carbon dioxide is bonded to a five-carbon sugar called RuPB. though it is known as the darkish response the Calvin cycle does not surely occur within the darkish or all through the nighttime time. that is because the procedure requires NADPH, which is short-lived and is derived from light-structured reactions.

The reactions of the Calvin cycle add carbon to an easy 5-carbon molecule referred to as RuBP. these reactions use chemical energy from NADPH and ATP that have been produced in the light reactions. The very last manufactured from the Calvin cycle is glucose. The Calvin cycle reactions may be organized into 3 simple degrees fixation discount and regeneration.

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beers law lab if your unknown copper sulfate solution was produced by diluting 20 ml of a more concentrated copper sulfate solution to a final volume of 100 ml, what was the original concentration of the concentrated solution?

Answers

100.0 mL of a solution containing copper was mixed in it. At 620 nm, this solution's absorbance was 0.477.

What does the focused meaning mean?

Contained, present, or taking place in a constrained region or area: not dispersed. a light beam that is extremely focused. 3. fervent, fervent a task requiring numerous hours of focused work.

What does liquid concentrated mean?

A liquid that has had its water removed has been strengthened by concentration. Use concentrated apple or apricot juice, honey, or both moderately to sweeten food. Condensed, rich, undiluted, and reduced are synonyms for Additional words for concentration.

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Predict how oxygen crosses the plasma membrane if the concentration of oxygen is lower inside the cell than it is outside the cell.

Answers

The oxygen crosses the plasma membrane if the concentration of oxygen is lower inside the cell than it is outside the cell is by the simple diffusion.

The diffusion can be defined as the process in which the movement of particles takes place from the lower concentration to the higher concentration through a semipermeable membrane. T he oxygen crosses the plasma membrane if the the concentration of oxygen is lower inside the it the outside the cell called as diffusion.

Thus, The oxygen crosses the plasma membrane if the concentration of oxygen is lower inside the cell than it is outside the cell is by the simple diffusion.

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Match these items.

1. changing from liquid to gas state
evaporation
2. the combining substances in a reaction
fusion
3. radiation
gamma rays
4. slow oxidation
burning
5. melting point of water
reactants
6. a reaction between a substance and oxygen
nuclear
7. pertaining to the nucleus of an atom
0 degrees C
8. to fuse or join together
rusting
9. rapid oxidation
thermo-
10. heat
oxidation

Answers

1,6,7 is correct




actually I don’t know

Why do you believe knowing how elements and compounds react together is essential in everyday matters?

Some elements are more "reactive" than other elements; why do you think this is?

Answers

It is very important to know how elements and compounds react together because everything that surrounds us is made out of elements and compounds. Therefore, understanding how these work can allow us to have a better understanding of the world that surrounds us. Moreover, it can avoid accidents when we deal with dangerous compounds, such as when we cook or clean.

Some elements are more "reactive" than other elements because the number of electrons in the outermost shell of the atom is greater that that of others.

What are elements?

A chemical element is a species of atoms that have a given number of protons in their nuclei, including the pure substance consisting only of that species.

The known elements have certain properties that helps in their identification .Those properties include  but are not limited to the following:

elements has  conductivity, elements has  magnetism, elements has melting point, elements has boiling point, elements has color, elements has state of matter etc.

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Answer:

it is very important to know how elements and compounds react together because everything that surrounds us is made out of elements and compounds. Therefore, understanding how these work can allow us to have a better understanding of the world that surrounds us. Moreover, it can avoid accidents when we deal with dangerous compounds, such as when we cook or clean.

Explanation:

What does the Virtual California model show most clearly? Earth science

Answers

"Virtual California" is a topologically realistic model used to simulate earthquakes in the San Andreas fault system.

The model includes elastic interactions between faults in the model, driving at the correct plate tectonic rate, and friction physics at faults using physics derived from laboratory models with parameters consistent with past seismic events. includes science. An important consequence of elastic interactions in models is the correlation of event occurrences and the emergence of spatiotemporal patterns. Without interaction, each error element works independently. Cooperative phenomena and patterns can be seen in interactions.

Previous numerical analyzes of this simulation focused on the distribution of repetition times between large events. From this, we can calculate the latency to the next major earthquake and create a hazard forecast for the California Fault. We propose and develop a new method for generating and evaluating synthetic earthquake catalogs using Virtual California. The goal of scoring is to use the paleoseismic data to identify intervals within the man-made data that best resemble current California seismic conditions. Primarily using the highest scoring states to calculate wait times and create earthquake forecasts. An alternative method involves using all states weighted to reflect how similar the recent past is to the observed data. In this way, we integrate paleoseismic data into the simulation. In this talk, I will explain how to do it, give some examples of scoring methods, the results of calculating conditional probabilities that future events will occur, and what these probabilities were calculated using all the data. report how it differs compared to all data.

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an exothermic reaction takes place. which is true of the entropy of the surroundings? group of answer choices it remains constant it decreases it increases insufficient information

Answers

The entropy of the surrounding when an exothermic reaction takes place increases.

What is an Exothermic Reaction?

A reaction is defined as exothermic if the overall standard enthalpy change (H) is negative. Exothermic processes typically releases heat.

Example of Exothermic reaction:

CaO+H2O   Ca(OH)3 + Heat

What is entropy?

Entropy is a measurable physical characteristic and a scientific notion that is frequently connected to a condition of disorder, unpredictability, or uncertainty.

Now you know as in exothermic reaction heat is given to the surrounding hence more heat is added to the surrounding which results in the rising of entropy of the surrounding.

Hence, the entropy of the surrounding when an exothermic reaction takes place increases.

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what products are formed when cis-3-methyl-3-hexene reacts with hydrogen bromide? a) (2r,3s)-3-bromo-3-methylhexane b) (2r,3r)-3-bromo-3-methylhexane c) (2s,3r)-3-bromo-3-methylhexane d) (2s,3s)-3-bromo-3-methylhexane e) all of the above answers

Answers

The product formed when cis-3-methyl-3-hexene reacts with hydrogen bromide is 2s,3r)-3-bromo-3-methylhexane This happens through  SN1 reaction.

Cis-3-methyl-3-hexene will react with HBr through SN1 reaction. First, the H from HBr will add to the less substituted carbon in the double bond following Markonikov's rule to form a stable tertiary carbocation intermediate.

The ionic addition of hydrogen halides to alkenes proceeds through SN1. The first step involves the protonation of the alkene by the hydrogen halide that is present. This step follows the Markonikov's rule, which predicts that the proton will add to the less substituted carbon in the double bond or to the more substituted carbon atom to form the more stable carbocation. The next step is the addition of the halide ion to the carbocation. Here, the halide can add to either side of the carbocation; thus, forming a mixture of R and S products.

Cis-3-methyl-3-hexene will react with HBr Through SN1. First, the H from HBr will add to the less substituted carbon in the double bond (Markonikov's rule) to form a stable tertiary carbocation intermediate. Br− will then add to either side of the carbocation to form a mixture of (3S)-3-bromo-3-methylhexane and (3R)-3-bromo-3-methylhexane.

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which naturally occurring atmospheric gas is particularly of concern to scientists studying human-generated greenhouse gases?

Answers

Methane, nitrous oxide, carbon dioxide, and other manmade compounds are among the main greenhouse gases. Since it now contributes the most to the warming caused by human activity, carbon dioxide is sometimes cited as the most significant anthropogenic greenhouse gas.

About half of all carbon dioxide emissions from human activity between 1750 and 2010—the most common and longest-lasting greenhouse gas—were produced in just the previous 40 years, primarily as a result of the burning of fossil fuels and industrial operations.

What is Atmospheric gas ?

Gases found in the atmosphere of the Earth are known as atmospheric gases. Although greenhouse gases (carbon dioxide, methane, nitrous oxide, water vapor, and ozone) make up 1% of the air, oxygen and nitrogen make up 99% of these gases.

About 78% of the gases in the Earth's atmosphere are nitrogen, 21% are oxygen, 0.9 % are argon, and 0.1 % are other gases. The remaining 0.1 percent of gases includes trace amounts of neon, water vapor, methane, carbon dioxide, and methane.

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If 0. 274 moles of a substance weighs 62. 5 g, what is the molar mass of the substance, in units of g/mol?.

Answers

The molar mass of the substance will be "228 g/mol".

Given values are:

Mass of substance = 62.5 g

Number of moles of substance = 0.274 moles

Now,

The Molar mass of the substance will be= Grams/Moles

By substituting the values, we get:

=62.5/0.274

=228g/mol.

What do you mean by molar mass?

Substances occupy room and have mass. Particles, which make up substances, frequently should be estimated in tests, and it is vital that these estimations are exact. Be that as it may, how might we quantify something so little in a precise manner? How would we typically quantify atoms? In the science lab, we utilize a device called a logical equilibrium to quantify in grams.

Through cautious estimation, researchers can decide the quantity of moles a particular response will require. A mole is a unit of measure that assists us with looking at particles of some random substance and its mass. Assuming we definitely know the quantity of moles required, we can utilize the idea of molar mass to ascertain the number of grams of the substance that are required. The molar mass, otherwise called sub-atomic weight, is the amount of the complete mass in grams of the multitude of particles that make up a mole of a specific particle. The unit used to quantify is grams per mole.

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If you pour hot soup into a bowl, and the bowl stays cool to the touch, you can assume that
A
the bowl is a good insulator of heat.

B
the bowl is a good conductor of heat.

C
the bowl’s temperature cannot be measured.

D
the bowl transfers most of its heat through radiation.

Answers

I believe this would be A

question 14 (1 point) iron will react with water to produce an iron oxide and hydrogen gas. which equation below represents a correctly balanced equation for this reaction? a. Fe + 4H2O > Fe3O4 + 4H2 b. 3Fe + 4H2O > Fe3O4 + H2 c. 3Fe + 4H2O > Fe3O4 + 4H2 d. 3Fe + 4H2O > Fe3O4 + H2

Answers

The correct option for chemically balanced equation is - d. 3Fe + 4[tex] H_{2}[/tex]O > [tex] Fe_{3}[/tex][tex] O_{4}[/tex] + [tex] H_{2}[/tex].

The mentioned chemically balanced reaction states reaction between iron and water to produce iron oxide and hydrogen. Fe represents iron, [tex] H_{2}[/tex]O represents water, [tex] Fe_{3}[/tex][tex] O_{4}[/tex] represents iron (II, III) oxide and [tex] H_{2}[/tex] represents hydrogen.

Iron oxides are commonly found in human body and environment. It is present in body as haemoglobin and in nature as ores. The applications are as catalyst, paints, concretes, thermites etc. Iron oxides possess multiple properties including large surface area, magnetic properties and low toxicity. The low toxicity makes it a suitable candidate for therapeutic purposes in human body by participating in drug delivery, magnetic coatings, biosensors, and other purposes like wastewater purification, magnetic data storage etc.

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A 0. 20 mol sample of mgcl2(s) and a 0. 10 mol sample of kcl(s) are dissolved in water and diluted to 500 ml. What is the concentration of cl- in the solution?.

Answers

A 0. 20 mol sample of MgCl₂(s) and a 0. 10 mol sample of KCl(s) are dissolved in water and diluted to 500 ml. the concentration of Cl⁻ in the solution is 1M.

the equations is given as :

MgCl₂  ---->  Mg²⁺   +  2Cl⁻

KCl  ----.  K⁻   +   Cl⁻

moles of chloride ion in MgCl₂  = 2 × 0.20 mol

                                                   = 0.40 mol

moles of chloride ions in KCl = 0.10 mol

total moles = 0.40 + 0.10 = 0.50 mol

volume = 500 mL = 0.5 L

concentration Cl⁻ , molarity = 0.50 / 0.5

                                              =1 M

Thus, A 0. 20 mol sample of MgCl₂(s) and a 0. 10 mol sample of KCl(s) are dissolved in water and diluted to 500 ml. the concentration of Cl⁻ in the solution is 1M.

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Under conditions of excess oxygen, rubisco will use o2 instead of co2 and less carbon is fixed. This process is called.

Answers

Under conditions of excess oxygen, rubisco will use o2 instead of co2 and less carbon is fixed. This process is called Photorespiration.

What is Photorespiration?

Photorespiration is the process by which molecular oxygen (O2) is taken up by light and carbon dioxide (CO2) is released from organic compounds. The gas exchange is similar to respiration and works in the opposite direction of photosynthesis, where CO2 is fixed and O2 is released.

Carbon fixation produces two molecules, 3-phosphoglycerate (PGA), which enter the Calvin cycle and eventually form sugars.

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Why can you not selectively epoxidize an alkene with mcpba in the presence of a ketone?.

Answers

MCPBA is useful reagent for epoxide formation and ketone to ester formation and it epoxidized alkene to epoxide and also oxidize ketone to ester and so we can't selectively epoxidize an alkene if both alkene and ketone are present

Purified mCPBA is a useful reagent for the oxidation of various classes of aldehyde α branches aliphatic aldehydes undergo beayer villiger oxidation to form formates and α bramced α-β unsaturated aldehydes yield enol formates and or epoxides and α hydoxylated aldehydes yield ketone and most aldehydes and ketone have a low celling temprature below ambient temprature that is these compound do not polymerize above room temprature and mCPBA is strong oxidant comparable to other peracid and the advantage of 3 chloroperbenzoic acid is it handling

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If the price elasticity of demand for Clean Sheets laundry detergent is 1.50, a 5 percent decrease in the price will lead to which of the following? A. a 7.5 increase in quantity B. a 7.5 decrease in quantity C. a 1.50 decrease in quantity D. a 1.50 increase in quantity

Answers

The price will lead to a 7.5 increase in quantity. Option A.

Expanded expenses typically result in a lower call-for and call-for increases commonly result in expanded supply. however, the delivery of different merchandise responds to demand otherwise, with some products' demand being much less touchy to costs than others. A fall in charge leads to an extension of call but makes it less worthwhile for a commercial enterprise to supply the best or carrier affected.

Calculation:-

Demand for laundry detergent is = 1.50

Decrease in price percent = 5%

5 % of 1.50 is = 1.50×5/100

= 0.075 or 7.5.

Economists call this the regulation of demand. If the charge goes up, the amount demanded goes down. If the charge decreases, the quantity demanded will increase. that is the regulation of demand. If greater people want to buy inventory than promote it then the price moves up. Conversely, if greater human beings desired to sell a stock than purchase it there could be a greater supply than called for and the charge would fall. knowledge supply and call for is straightforward.

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Please Help! Please answer ASAP!
15. Scientists may design an experiment with a control group, which is a set of organisms or samples that do NOT receive the treatment (the independent variable) that is being tested. Scientists
can then compare normal changes in organisms or samples with those that might have occurred
because of the treatment. The idea of a "control group" is not the same as a "controlled variable."
Suppose a scientist is doing an experiment to determine the effect of a cancer drug on mice with
lymphoma.
a. What are some of the variables the scientist should control in the experiment?
b. Describe the control group for this experiment.

This is what I have so far, but I could be wrong.

Answers

a) A control variable would be the same species of the rat that were used in the entire experiment.

b) A control group is the group of rat that do not have lymphoma.

What is control variable?

The control variable is a group which is unchanged or constant throughout the experiment. They may include temperature, humidity, pressure, experimental techniques, sample volume etc.

In an experiment control variable is the variable which must be kept constant throughout the experiment to keep the outcome of the experiment unaltered. The control group is the one that don't receive the treatment while being tested in an experiment.

Therefore, a control variable would be the same species of the rat used in the entire experiment and control variables are the one which do not have a lymphoma.

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palmitic acid only contains two oxygens per sixteen carbons, whereas glucose has six oxygen atoms per six carbons. explain the significance of this when each molecule is fully oxidized

Answers

The significane is that it generates more ATP per carbon (128/16) than glucose (38/6).

What is Palmitic acid?

Palmitic acid increases LDL cholesterol levels more than other saturated fats, such as stearic acid. According to them, there is compelling evidence that high consumption of palmitic acid increases the risk of cardiovascular disease. Palmitic acid has only two oxygen atoms for every sixteen carbons, whereas glucose has six oxygen atoms for every six carbons. As a result, when fully oxidized, palmitic acid generates more ATP per carbon (128/16) than glucose (38/6). As a result, we use fat as our primary energy storage material.

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if cheri buys a zero coupon bond at $5000 and the face value amount is stated as $10,000, how much will she receive when the bond matures in 10 years? two forces, f1 and f2, are applied to a block on a frictionless, horizontal surface as shown. if the magnitude of the block's acceleration is 2 m/s^2, what is the mass of the block? true or false? simulated experiences in nursing education should contain the peda elements to provide important opportunities for students to hone critical thinking and clinical skills in a safe and supportive environment. measuring the amount of time a person requires to complete different cognitive tasks is the goal of mental . The question is in picture below, help! Hello, i have a geography question for you on city living worth 40 pointsExplain the differences between affordable and energy efficient housing.(4marks) Each time that Daniel runs an obstacle course, he can run it 2 seconds faster than the last time.He ran the course in 57 seconds the first time. How fast will he run the course the seventh time?OA. 43 secondsB. 45 secondsO C. 47 secondsOD. 55 seconds Research has shown that if you invest in which of the following activities, you will end up with an attitude of continuous and constant improvement.a. Create Value for the customerb. Assure quality at the sourcec. Stick to the rulesd. Look out for your own teame. All of the abovef. Only a and b What can be inferred about the author's message in "The Work You Do, the PersonYou Are" based on the essay's overall structure? the idea of a memory network and the process of retrieval through spreading activation can provide a rather straightforward explanation for the memory phenomenon of . A sum of $2000 is spill between 2 investments, one paying 7% and the other 8%. If the return on the 8% investments exceeds that on the 7% investments by $40. How much is invested at each rate? How many patients can you use a single-use injection device with before it goes into the disposal container?. David left $300 in an account that earns 5% interest onthe money he originally deposited. When he collected hisinterest, he had earned $60 in interest. How long did heleave the money in the account? A man falls 2.0 m to the floor (assume down to be the negative direction.)How long does the fall take?What is his velocity when he hits the floor? In the anthropological study of political systems, social control maintains social norms (cultural standards) and regulates conflict. which of the following is not a form of social control? a. hegemonyb. shamec. making subordinates believe they will eventually gain powerd. exogamye. gossip alex and ben go to a cafe with some friends. alex buys 4 cups of coffee and 3 cups of tea. he paid a total of 6.95.Ben buys 5 cups of coffee and 2 cups of tea. He pays a total of 7.20.work out the total cost of each cup of coffee in the cost of each cup of tea An ideal incompressible fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider section?. What motivates Joe Simpson to get out of the crevasse? Cite evidence from the text to support your answer. Due to a lack of original repertoire for the wind band in the mid 20th century many conductors and composers. What is the embryo?A. The roots of the plantB. The tiny miniature plantC. The protection for the plantD. The food the plant will use