The number of moles of the KClO₃ required to produce 5.15 moles of KCI is equal to 5.15 moles.
What is a mole?A mole can be described as a standard unit that is utilized to calculate the huge number of atoms, molecules, ions, or other particular particles. The mass of the 1 mole of any element is known as atomic mass and that of any compound is known as molar mass.
The number of units present in one mole is equal to 6.023 × 10 ²³ which is known as Avogadro’s constant or Avogadro’s number.
Given the chemical reaction of the decomposition of KClO₃ is :
2 KClO₃ ⟶ 2KCl + 3O₂
Given, the number of moles of KCl = 5.15 moles
As from the given decomposition chemical reaction,
Two moles of the KCl are produced from moles of KClO₃ = 2
5.15 moles of KCl are produced from KClO₃ = 5.15 mol
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Huda sees an obvious set of fingerprints on a mirror at a crime scene. How can she BEST preserve this evidence?
A.
Sketch the shape of the prints.
B.
Cut the fingerprints out of the mirror.
C.
Use clear tape to lift the prints.
D.
Make a plaster mold of the prints.
The best way to preserve the fingerprint is by using a clear tape to lift the prints.
The fingerprints help us grab objects and also for grip. the 3 D version of the ridges enables us to pick things up. Patterns on the fingers play a very important role in the fine motor skills of the hands.
One of the most important uses of the fingerprints is to help investigators link one crime scene to another involving the same person. Fingerprint identification also helps investigators to track a criminal's record, their previous arrests and also convictions, which help in sentencing, probation, parole and pardoning decisions.
The print that are left on surfaces such as mirror can be carefully be lifted on a clear tape and can be seen it clearly.
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A 90.0 g sample of 0.375 M HCl (aq) solution at 25.0 °C. If 3500.0 Joules of heat is added to this solution, what is the final temperature in degrees Celsius? The specific heat of 0.375 M HCl (aq) is 4.07 J g-1 °C.
The final temperature of the solution is 34.6°C.
What is the final temperature?We know that heat can be added or removed from a sample in the process of dissolution. The term dissolution has to do with the process by which a liquid is made to become mixed with a solid.
In this case we have the following information;
Mass of the sample = 90.0 g
Heat added = 3500.0 J
Initial temperature of the system = 25.0 °C
Heat capacity of the solution = 4.07 J g-1 °C
Using;
H = mcdT
H = heat added
m = mass of the sample
c = heat capacity
dT = temperature change
Then we have;
3500 = 90 * 4.07 (T - 25)
3500 = 366.3T - 9157.5
3500 + 9157.5 = 366.3T
T = 3500 + 9157.5/366.3
T = 34.6°C
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2. Precipitation is one of the many ways that water is cycled from the atmosphere to Earth and or the Ocean. What are the ways that we describe precipitation? A. Solid, liquid, fog B. Liquid, condensation, solid C. Rain, sleet, snow, hail D. Rain, sleet, fog, liquid
Precipitation is one of the many ways that water is cycled from the atmosphere to Earth and or the Ocean. the ways that we describe precipitation are : rain. sleet , snow and hail.
The precipitation is one of the water cycle. the steps in the water cycle is the precipitation, collection , evaporation , and condensation. the precipitation steps involved : rain. sleet , snow and hail.
Thus, Precipitation is one of the many ways that water is cycled from the atmosphere to Earth and or the Ocean. the ways that we describe precipitation are : rain. sleet , snow and hail.
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Inside the container is an ideal gas at 1.00 atm, 20.0 ∘C, and 1.00 L. This information will apply to the first three parts of this problem.
What will the pressure inside the container become if the piston is moved to the 1.40 L mark while the temperature of the gas is kept constant?
The pressure inside the container will become 0.71 atm if the piston is moved to the 1.40 L
How do I determine the pressure inside the container?To obtain the pressure inside the container, we'll begin by listing out the given parameters from the question. This is given below:
Initial pressure (P₁) = 1.00 atmInitial volume (V₁) = 1.00 LTemperature = 20.0 °C = ConstantNew volume (V₂) = 1.40 LPressure inside the container (P₂) = ?Since the temperature is constant, we can determine the pressure inside the container by using the Boyle's law equation as illustrated below:
P₁V₁ = P₂V₂
1.00 × 1.00 = P₂ × 1.40
1 = P₂ × 1.40
Divide both sides by 1.40
P₂ = 1 / 1.40
P₂ = 0.71 atm
Thus, from the calculation made above, we can conclude that the pressure inside the container is 0.71 atm
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NEED HELP FOR A TEST
What is the empirical formula
for this compound?
B3H6N3
BH2N
B2H4N2
B3H6N3
The empirical formula for the given compound B₃H₆N₃ is BH₂N. Therefore, option (1) is correct.
What is the empirical formula?The empirical formula can be described as the simplest ratio of the number of different atoms present in a compound. The molecular formula of the compound can be defined as the actual number of each atom present in a molecule. This formula is generally used and is also a multiple of the empirical formula of a compound.
The empirical formula provides the ratio of the number of atoms of different elements in a given compound. The percentage composition of a compound gives the empirical formula of that compound.
Given the compound is inorganic benzene which has a molecular formula is B₃H₆N₃. We can write this molecular formula as (BH₂N)₃. Therefore the empirical formula of the given compound is BH₂N.
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I need the answer asap
Answer:
C
Explanation:
Water vapor is Earth's most abundant greenhouse gas. It's responsible for about half of Earth's greenhouse effect — the process that occurs when gases in Earth's atmosphere trap the Sun's heat.
Hope it made sense :)
solutions with a greater ph that 7 are
Answer:
Basic
Explanation:
Solutions with a ph less than 7 are acidic, solutions with a ph greater than 7 are basic, and solutions with a ph equal to 7 are neutral.
In April, Earth's orbit makes the sun appear to be in the constellation Aries, even though the constellation itself is not visible during the day. In January, Earth's orbit makes the sun appear to be in the constellation Capricorn, even though the constellation itself is not visible during the day. The path the sun follows through the sky includes 12 constellations known as the zodiac.
What is the name given to this path or plane?
(1 point)
Responses
the ecliptic
the celestial equator
the zodiacal path
the solar orbit
Answer:
The ecliptic.
is the correct answer
Which one of the following correctly represents a conjugate acid-base pair?
Select one:
a. H3O+, OH™
b. H₂O, O
c.H₂CO3, CO3²-
d. H₂CO3, HCO3
e. HCI, Cl₂
A conjugate acid-base pair is represented by H2CO3, HCO3.
Option d is correct.
What exactly are conjugate acid-base pairs?A conjugate acid-base pair is a pair of substances that differ exclusively in the presence of a proton (H+) according to the Brnsted-Lowry definition of acids and bases. A proton given to a base creates a conjugate acid, while a proton taken away from an acid creates a conjugate base.
Is HCO3's conjugate base CO2?H2CO3 is created by adding CO2 and water. The hydrogen carbonate ion, which is the same thing, is created when the carbonic acid dissociates, producing a proton (H+) and bicarbonate ion (HCO3(1-)). Since the dissociation's end result is the bicarbonate ion, it is the conjugate BASE.
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Write the net ionic equation for the reaction between copper and AgC2H3O2
The net ionic equation for the reaction between copper and silver acetate is; [tex]Cu(s) + 2Ag^+ ====== > Cu^{2+} (aq) + 2Ag(s)[/tex]
What is net ionic equation?The term net ionic equation has to do with the equation that shows the species that underwent a change in the reaction. As such, the ions that did not undergo a change does not appear in the net ionic equation for a given reaction.
In this case, what we have is the net ionic equation for the reaction between copper and silver acetate. We know that the silver ion is going to replace the silver so that we have;[tex]Cu(s) + 2Ag^+ ====== > Cu^{2+} (aq) + 2Ag(s)[/tex]
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President Bush signed the Energy Policy Act in 2005. How did that affect hydropower?
President Bush signed the Energy Policy Act in 2005 affect hydropower because Bush enacts the Energy Policy Act as law in an effort to address the rising energy issues. By offering tax breaks and credit guarantees for energy production of all kinds, including hydropower, the act altered American energy policy.
What is hydropower about?The revolutionary Architecture Hydraulique, written by French hydraulic and military engineer Bernard Forest de Bélidor, marked the beginning of the development of the modern hydropower turbine.
Note that the Energy Policy Act of 2005 was signed by President Bush on August 8, 2005. The Underground Storage Tank Compliance Act of 2005, Title XV, Subtitle B, amends Subtitle I of the Solid Waste Disposal Act, the primary law that established the underground storage tank (UST) program.
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Why might humans and propane have different properties
Due to different structural compositions, humans and propane vary from one another.
Humans are made up of different elements than propane. For example, humans are made up of carbon, hydrogen, nitrogen, oxygen, and other trace elements, while propane is made up of carbon and hydrogen. This difference in composition leads to different properties. For example, humans are able to breathe and propane is not.
Humans and propane have different properties because they are made of different materials. Propane is made of hydrocarbons, while humans are made of cells.
The main difference between humans and propane is that humans are living while propane is not. This means that humans are made of cells that propane does not have. Additionally, humans breathe and have a circulatory system, while propane does not. Finally, humans are able to think and feel, while propane cannot.
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What is the total number of atoms contained in 2 moles of iron
Answer:
2
Explanation:
Because both atoms ate from the same element, iron
Why is it important that babies' skulls have soft spots (fontanels)?
Explanation:
These soft areas are the gaps between the skull's bones, when bone growth hasn't finished. As a result, the skull can be shaped during birth. By the age of two to three months, the smaller spot at the back usually closes. Around age 18 months, the larger spot in the front frequently closes.