A system includes:
а
objects that are interacting.
B the surrounding air.
C the surface or medium on which the objects rest.
D all of the above.

Answers

Answer 1
It’s D, all of the above.

Related Questions

Which process is shown in the diagram?
0,
ing
CO, +H,0
Chloroplast
Mitochondrion
Sugar
Heat
o
ATP
Respiration

Answers

I don’t see any diagram

The cellular respiration process, which generates ATP as the final result, employs oxygen and sugar as reactants. So, the correct option is A.

What is Cellular respiration?

Cellular respiration is the process by which organisms combine oxygen with food molecules, channeling the chemical energy from those resources into life-sustaining activities while eliminating carbon dioxide and water as waste.

Both oxygen and glucose are reactants in the mobile respiratory system. ATP is the primary component of mobile respiration; waste products include carbon dioxide and water.

Oxygen might be present or absent while cells are respiring. Nonetheless, the activity is essentially known as "cellular respiration" because the cell seems to "respire" by consuming molecular oxygen (as an acceptor of electron) and exhaling carbon dioxide (as an end product).

Therefore, the correct option is A.

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Your question is incomplete, most probably the complete question is:

The process shown in the diagram produces oxygen and sugar. Which

process uses oxygen and sugar as reactants?

Chloroplast

Mitochondrion

Sugar

CO, +H,0

ATP

Heat

Respiration

A. Cellular respiration

B. Water cycle

c. Transpiration

D. Photosynthesis

In chemical reaction atoms are what?

Answers

Answer:

In chemical reaction atoms are reactants

Human blood has a molar concentration of solutes of 0.30 M. What is the osmotic pressure of blood at 25°C?

Answers

Answer:

π = 7.33atm

Explanation:

Osmotic pressure is defined as the pressure that must be applied to stop the mass transfer when a semipermeable membrane separates it of pure water. The equation is:

π = M×R×T

Where P is osmotic pressure

M is molar mass = 0.30M

R is gas constant = 0.082atmL/molK

And T is absolute temperature = 25°C + 273.15 = 298.15K

π = 0.30M×0.082atmL/molK×298.15K

π = 7.33atm

Osmotic pressure of human blood at 25 degree C or at absolute temperature is equal to 7.33 atm.

What is osmotic pressure?

It is defined as the minimum pressure exerted on the solution, which is required to stop the flow of pure solvent from low concentration to high concentration through the semi permeable membrane.

Osmotic pressure can be calculted as :

P = M × R × T

Where, P = Osmotic pressure

M = Molar mass = 0.30 M (given)

R = Universal gas constant = 0.082 atmL/molK

T = Absolute temperature 25 degree C = 25⁰C + 273.15 = 298.15 K

Putting all these values in the given equation, we get:

P = 0.30 × 0.082 × 298.15 = 7.33 atm

Hence, 7.33 atm is the osmotic pressure of blood at 25⁰C .

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11. Which branch of chemistry is concerned with the behavior of substances?
Biochemistry
Physical
Inorganic
O Organic

Answers

Answer:

Physical

Explanation:

According to the atomic model for matter when atoms are heated they move faster. This causes the rate of reaction to change because the atoms

become larger.
have a better chance of colliding with other atoms.
multiply.
stop moving.

Answers

B.) have a better chance of colliding with other atoms.

A scientist is measuring how quickly different liquids flow
down a ramp. She notices that water flows more easily
than dish soap.
Which property of water is the scientist observing?
A. Viscosity
B. Compression
C. Crystalline structure
D. Surface tension

Answers

Answer:

I think its A

Explanation:

Hope this helps ;)

How many valence electron does sulfur

Answers

Explanation:

Sulfur has 6 valence electron

Valence electron shows group( in column)

is the second one or the fourth one?

Answers

Answer:

D. Light waves travel fastest through a vaccumm

Explanation:

"In a vacuum , light waves move their fastest: 186,000 miles per second (300,000 kilometers per second). This is also the fastest that anything in the universe moves. But when light waves move through air, water or glass, they slow down."

Please mark me as brainliest! <3

Hopefully I could help! Good luck.

A yellow line occurs at 572.8 nm in the emission spectrum of phosphorus. What amount of energy, in joules, must be released by an electron in a phosphorus atom to produce a photon of this light?

Answers

Answer:

3.47 × 10⁻¹⁹ J

Explanation:

A yellow line occurs at 572.8 nm in the emission spectrum of phosphorus. When an electron undergoes this process, it requires an amount of energy to produce a photon of this light. We can calculate the energy (E) using the following expression.

E = h × c/λ

where,

h: Planck's constant (6.63 × 10⁻³⁴ J.s)c: speed of light (3.00 × 10⁸ m/s)λ: wavelength (572.8 nm = 5.728 × 10⁻⁷ m)

E = 6.63 × 10⁻³⁴ J.s × 3.00 × 10⁸ m/s/5.728 × 10⁻⁷ m

E = 3.47 × 10⁻¹⁹ J

A mixture of 10.0 g of Ne and 10.0 g Ar have a total pressure of 1.60 atm. What is the partial pressure of Ar

Answers

The partial pressure of Ne is 1.06 atm. The answer is a. 1.1 atm

Answer:

0.53 atm

Explanation:

First we have to obtain the number of moles of each gas.

Number of moles of Ne = 10g/20g/mol = 0.5 moles

Number of moles of Ar = 10 g/40 g/mol = 0.25 moles

Total number of moles = 0.5 moles + 0.25 moles = 0.75 moles

Partial pressure of Ar = number of moles of Ar/Total number of moles * total pressure

Partial pressure of Ar = 0.25 moles/ 0.75 moles * 1.60 atm

Partial pressure of Ar = 0.53 atm

10. For each of the following pairs of ionic compounds, state which would be expected to have the higher (more negative) lattice energy.

a. LiF or KBr

b. NaCl or MgS

c. MgO or RbI

Answers

Answer:

C I belive

Explanation:

The higher lattice energy in option a is for LiF. Similarly, MgS have higher lattice energy that NaCl and  MgO have higher lattice energy than RbI.

What is lattice energy?

Lattice energy of a compound is the energy required to convert one mole of that compound into its constituent gaseous ions. Lattice energy increases as the size of the ion decreases. As well as, higher the charge of the ions higher will be the lattice energy.

In LiF and KBr, Li and F are the smaller ions and is having higher lattice energy. In the case of NaCl and MgS, Mg and S are having +2 charge and are smaller causes MgO higher in lattice energy.

Similarly in the case of MgO and RbI the same concept can be applied. Rb⁺ and I⁻ are bigger ions where as Mg²⁺ and O²⁻ are comparatively smaller and have higher charge result in higher lattice energy.

Thus compound which have higher lattice energy in option a is LiF, in option b is MgS and in option C is MgO.

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find the percent yield,if 6.0g of Licl are actually produced and the theoretical yield is 35.4g of Licl.​

Answers

Answer:

Percent yield = 17%

Explanation:

Given data:

Actual yield of lithium chloride = 6.0 g

Theoretical yield of lithium chloride = 35.4 g

Percent yield = ?

Solution:

Formula:

Percent yield = (actual yield / theoretical yield )× 100

Now we will put the values in formula.

Percent yield = (6.0 g/ 35.4 g)× 100

Percent yield = 0.17 × 100

Percent yield = 17%

SOMEONE PLEASE HELP

Answers

Answer:

6. 7870 kg/m³ (3 s.f.)

7. 33.4 g (3 s.f.)

8. 12600 kg/m³ (3 s.f.)

Explanation:

6. The SI unit for density is kg/m³. Thus convert the mass to Kg and volume to m³ first.

1 kg= 1000g

1m³= 1 ×10⁶ cm³

Mass of iron bar

= 64.2g

= 64.2 ÷1000 kg

= 0.0642 kg

Volume of iron bar

= 8.16 cm³

= 8.16 ÷ 10⁶

[tex] = 8.16 \times 10^{ - 6} \: kg[/tex]

[tex]\boxed{density = \frac{mass}{volume} }[/tex]

Density of iron bar

[tex] = \frac{0.0642}{8.16 \times 10^{ - 6} } [/tex]

= 7870 kg/m³ (3 s.f.)

7.

[tex]\boxed{mass = density \: \times volume}[/tex]

Mass

= 1.16 ×28.8

= 33.408 g

= 33.4 g (3 s.f.)

8. Volume of brick

= 12 cm³

[tex] = 12 \times 10^{ - 6} \: m^{3} \\ = 1.2 \times 10^{ - 5} \: m ^{3} [/tex]

Mass of brick

= 151 g

= 151 ÷ 1000 kg

= 0.151 kg

Density of brick

= mass ÷ volume

[tex] = \frac{0.151} {1.25 \times 10^{ - 5} } \\ = 12600 \: kg/ {m}^{3} [/tex]

(3 s.f.)

How does conduction happen?

Answers

Answer:

Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. ... The fire's heat causes molecules in the pan to vibrate faster, making it hotter. These vibrating molecules collide with their neighboring molecules, making them also vibrate faster.

Explanation:

Of the molecules below, only ________ is polar.

a. Cl2
b. CS2
c. H2O
d. CBr4
e. PF5

Answers

Answer:

The correct answer is option c, that is, H2O.

Explanation:

The two broad classes of molecules are the polar and nonpolar molecules. Polarity illustrates the dispersion of electrical charge surrounding a molecule. The charge is unevenly distributed in a polar molecule, while it is distributed evenly in a nonpolar molecule. It can be said that a polar molecule possesses the regions of partial charge.

A polar molecule like water possesses a dipole, that is, a part of the molecule exhibit a partial negative charge, and the part of the molecule possesses a partial positive charge. Generally, a polar molecule comprises polar or ionic covalent bonds. The polar molecules are generally soluble in polar solvents and are hydrophilic. They have higher melting points because of the strong intermolecular forces between them in the form of hydrogen bonding.

In the given options, H2O is a polar molecule as the hydrogen atoms electrons get fascinated towards the oxygen atom's electrons, which forms a positive charge on the atoms of hydrogen, and a negative charge on the oxygen atom.

Of the molecules, only water (H₂O) is polar and the correct option is option C.

A polar molecule is a molecule that has a partial positive charge (+) and a partial negative charge (-) due to an uneven distribution of electron density. This occurs when there is a significant difference in electronegativity between the atoms within the molecule, causing the electrons to be pulled more towards one atom, creating a polarity.

In a polar molecule, the positive and negative charges are not balanced, resulting in a molecular dipole moment. The molecule may have a distinct positive and negative end, referred to as the poles.

Thus, the ideal selection is option C.

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The density of krypton gas at 1.35 atm and 54.1°C is ________ g/L.

a. 4.21
b. 0.304
c. 8.42
d. 0.0503
e. 0.237

Answers

a.

Explanation: I saw it on another website.

The diagram illustrates the water cycle.

Parts of the water cycle labeled U through Z. U: Water moving from a lake into the clouds. V: Clouds. W: Water falling from clouds as rain and snow. X: Water moving from ground to the clouds. Y: Water flowing down the mountainside into a lake. Z: Underground water going into lake.
Which process occurs at location W?

precipitation
evaporation
condensation
transpiration

Answers

Answer:

Precipitation

Explanation:

In the water cycle, water experiences different phase changes from one state to another in nature.

The cycling affords water to in solid, liquid and the vapor form.

From the cycle show, W represents precipitation.

During precipitation, water in the atmosphere begins to fall. U is evaporationX is transpiration. V is the condensation.

Answer:

precipitation

Explanation:

Calculate the mass in grams of 0.0035 mol of NaNO3

Answers

Answer:

The Mass in Grams= 0.5145

Explanation:

The atomic mass of Na=23

The atomic mass of No3= 62

we multiply 0.0035×((23×1)+(62×2)) = 0.5145 grams

I didn’t round, good luck.

what is the potentual energy of 7 kg object, 12 m off the ground?​

Answers

Answer:

823.2 J

Explanation:

PE = mgh

= (7 kg) (9.8 m/s^2) (12 m)

= 823.2 J

Answer:

Required Answer:-

Mass=m=7kg

Height=h=12m

Gravitational force=g=10m/s^2

As we know that

[tex]{\boxed{\sf Potential\:energy{}_{(P.E)}=mgh}}[/tex]

Substitute the values

[tex]{:}\longmapsto [/tex][tex]\sf P.E=7×12×10 [/tex]

[tex]{:}\longmapsto [/tex][tex]\sf P.E=84×10[/tex]

[tex]{:}\longmapsto [/tex][tex]\sf Potential\:energy=840Joule [/tex]

what is the correct equation for water gas​

Answers

Answer:

Water-gas A mixture of carbon monoxide (CO) and hydrogen (H2) produced by passing steam over red-hot coke using the endothermic reaction C + H2O # CO + H2.

Explanation:

Why is it necessary to cool a hot , supersaturated solution slowly during a recrystallization?

Answers

Answer:

This is because, the is less chance of trapping impurities in the developing crystal lattice

Answer:

injuries

Explanation:

bc it will burn your hands

Luca made the following chart for Earth’s four basic movements. What needs to be correct on his chart? Rotation Speed Revolution Speed Solar System Speed Milky Way Speed 0.3 miles/sec 18.5 miles/sec 370 miles/sec 150 miles/sec The solar system speed and Milky Way speed should be switched. The rotation speed and revolution speed should be switched. The revolution speed and solar system speed should be switched. The rotation speed and Milky Way speed should be switched.

Answers

Answer:The Solar System speed and Milky Way speed should be switched

Explanation:

The Milky Way speed and solar system speed should be switched with each other. Therefore, option (A) is correct.

What is the speed of the earth's revolution and rotation?

The rotation of the earth can be described as the spinning of the Earth around its own axis. The axis has an angle of 23(1/2)° and it is perpendicular to the plane of the orbit of the earth. The northern and southern hemispheres lean in a direction away from the Sun because Earth is tilted on its axis. The rotation speed of the earth is 0.3 miles/sec.

The Revolution of the earth is the movement of the Earth around the Sun in a fixed path. The revolution speed of the earth is 30 Km/s or 18.5 miles/sec. The milky way speed of the earth is 370 miles/sec and the solar system speed of the earth is 130 miles/sec.

But according to Luca's chart, the milky way speed is 150 miles/sec and the solar system speed is 370 miles/sec.

Therefore, the solar system speed and Milky Way speed need to be switched.

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In what phase is CO2 at 4 atm and -10°C is liquid, gas or solid? Starting from the same point, 4 atm and −10 °C, what phase change would eventually result from an increase in pressure?

a. vaporization
b. sublimation
c. freezing
d. deposition
e. melting
f. condensation

Answers

Answer:

(f).Condensation

CO2 exist as gaseous state at -10degree 4atm pressure and will become liquid upon increasing the pressure  

Explanation:

Using The phase diagram of CO2 we observe that

Carbon dioxide at -10degree Celsius and 4atm pressure will be in

Gaseous phase. Starting from the same point, 4atm and -10degree Celsius upon increasing the pressure the Carbon dioxide will change into liquid phase above 5.11atm pressure, this happened due to Condensation.

Therefore CO2 exist as gaseous state at -10degree 4atm pressure and will become liquid upon increasing the pressure till 5.11stm.  

The carbon dioxide has been existing in the gaseous state and with condensation, it has been converted to the liquid state. Thus, option F is correct.

The state of the gas at a particular pressure and temperature can be assessed from the phase diagram.

The state of Carbon dioxide at 4 atm and [tex]\rm -10^\circ C[/tex] have been the gaseous state.

The increase in pressure results in the decrease in the volume of the gas, as the pressure has been increased, the molecules will condense and result in the conversion of the gaseous state to the liquid state.

The carbon dioxide has been existing in the gaseous state at 4 atm and [tex]\rm -10^\circ C[/tex].  With the increase in pressure, the state of the gas has been changed to liquid due to condensation. Thus option F is correct.

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Calcium is an element. What is the smallest particle of calcium that has the same chemical properties of calcium?
A. an atom of calcium
B. a proton from a calcium atom
C. an electron from a calcium atom
D. a molecule that contains calcium

Answers

Answer:

A. An Atom

Explanation:

An atom is the smallest particle of an element, having the same chemical properties as the bulk element.

An atom of calcium is the smallest particle of calcium  that has the same chemical properties of calcium.

What is  an atom ?

An atom is defined  as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each  atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged  and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom  as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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1. What is the flame color of sodium?
yellow-orange
purple
green
blue-green

Answers

Orange is the color of Sodium

What is the enrgy change when the temperature of 14.4 grams of solid alumnum is decreased from 39.5°C to 23.0°C?

Answers

Answer:

[tex]Q=-213.84J[/tex]

Explanation:

Hello!

In this case, since energy involved when a substance undergoes a temperature change due to heat addition or removal is computed as shown below:

[tex]Q=mC\Delta T[/tex]

As the aluminum has a specific heat of 0.900 J/g°C and 14.4 g underwent such temperature decrease, the energy change is:

[tex]Q=14.4g*0.900\frac{J}{g\°C}(23.0\°C-39.5\°C)\\\\Q=-213.84J[/tex]

Which is an outlet energy flow.

Best regards!

An observation that deals with numbers is a(n)

A. Prediction

B. Quantitive observation

C. Evaluation

D. Qualitative observation

Answers

Answer:

B (Quantitative)

Explanation:

a clever way to remember the difference between quantitative and qualitative is that there is a n in quantitative which is the first letter to the word number. So quantitative is an oberservation with numbers

the answer is b like maggie said

What type of reaction is Cl2+2NaBr=NaCl+Br2

Answers

Answer:

Displacement reaction

Vitamin C contains the elements C, H, and O. It is known to contain 40.9% C and 4.58% H by mass. The molar mass of vitamin C has been found to be about 180 g/mol. The molecular formula for vitamin C is _________

Answers

Answer:

C₆H₈O₆

Explanation:

First off, the percent of oxygen by mass of vitamin C is:

100 - (40.9+4.58) = 54.52 %

Assume we have one mol of vitamin C. Then we would have 180 grams, of which:

180 * 40.9/100 = 73.62 grams are of Carbon180 * 4.58/100 = 8.224 grams are of Hydrogen180 * 54.52/100 = 98.136 grams are of Oxygen

Now we convert each of those masses to moles, using the elements' respective atomic mass:

C ⇒ 73.62 g ÷ 12 g/mol = 6.135 mol C ≅ 6 mol CH ⇒ 8.224 g ÷ 1 g/mol = 8.224 mol H ≅ 8 mol HO ⇒ 98.136 g ÷ 16 g/mol = 6.134 mol O ≅ 6 mol O

So the molecular formula for vitamin C is C₆H₈O₆

how many moles of ethanol C2H6O, are in a 10.0g sample​

Answers

Answer: 0.217 mol

Explanation:

To find the amount of moles in a 10 g sample, we need the molar mass of ethanol.

Molar Mass: 46.07 g/mol

Now that we have the molar mass, we can find moles.

[tex]10.0 g*\frac{1mol}{46.07g}=0.217 mol[/tex]

We know that there are 0.217 mol in a 10.0 gram sample.

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