CHEMISTRY HIGH SCHOOL

Which gas occupies the highest volume at STP?0.02 mol of O20.1 mol of Cl21 mol of N22 mol of H2

Answers

Answer 1
Answer: The correct answer is the fourth option. The gas, 2 mol of H2, occupies the highest volume at STP since at STP the volume of this gas is approximately 44.8 mol as compared to other options this has the greatest amount. At STP, 1 mol of a gas is said to be equal to a volume of 22.4 L.

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Which compound is insoluble in water?(1) calcium bromide (3) silver bromide
(2) potassium bromide (4) sodium bromide

Answers

I think the correct answer from the choices listed above is option 3. It is the compound Silver bromide that is insoluble to water. It has a very low solubility which is approximately 0.14 milligram per liter of water. Hope this answers the question. Have a nice day.

A compound of carbon and hydrogen having one double covalent bond between two of the carbon atoms in the molecule is known as what type of hydrocarbon?

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It would be known as a meth_(insert - ane, - ene, and -yne) hydrocarbon. 1 bond = -ane 2 bonds = - ene And so on.

How many grams of CO2 are in 2.1 mol of the compound?

Answers

Answer: Chemical Reactions,Acids, and Bases Practice

1. 2Na+Br2--->2NaBr

2. 92.4g

3. Volume of the solution

4. Reacts with metals

5. Exothermic

6. Conserved

The molar mass of CO2 is 28 grams per mole. If you aregiven 2.1 moles of CO2 and you are required to find the grams of this compound,simply multiply 28 grams per mole of CO2 by 2.1 moles of CO2 and you will get 58.8grams of CO2.

Which statements about the formation of the solar system are true and in a correct order? A.
A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects.

B.
Most of the dust and gas contracted into a central mass—the Sun; half the mass of the cloud condensed to form Jupiter; asteroids and comets crashed into the sun to form the smaller planets.

C.
A spinning cloud of dust began to compress to form the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets.

D.
Gravitational force held the newly formed planets around the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets.

Answers

The statement about the formation of the solar system that are true and in a correct order are Gravitational force held the newly formed planets around the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets. The answer is letter D.

43 A sample of helium gas is in a sealed, rigid container. What occurs as the temperature of the sample is increased?(1) The mass of the sample decreases.(2) The number of moles of gas increases.
(3) The volume of each atom decreases.
(4) The frequency of collisions between atoms increases.

Answers

Answer is: (4) The frequency of collisions between atoms increases.

The average kinetic energy of molecules depends on the temperature.

As temperature increases, molecules gain more energy from surrounding and move faster and have more collisions.

Kinetic energy (standard unit is the joule J) depends on speed of the molecule.

Charles' Law (The Temperature-Volume Law) - the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature:  

V₁/T₁ = V₂/T₂.  

When temperature goes up, the volume also goes up.
The best answer is (4) The frequency of collisions between atoms increases, for we are providing the atoms with energy.
Hope this helps~

What is the third most abundant gas in the atmosphere?a. Nitrogen
c. Argon
b. Helium
d. Oxygen

Answers

Argon
Hope this helps!  I'm not sure i'll get the brainiest answer but oh well
Argon is the third most abundant gas in the atmosphere, while Nitrogen is the first. 

Answer: Nitrogen 
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