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sertanlavr [38]
2 years ago
14

Please help me !!!!?:(

Chemistry
1 answer:
atroni [7]2 years ago
7 0
True, a lunar eclipse occurs when the Moon is between the Sun and Earth
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What is the mass of 2.2x10^9 molecules of CO2? *​
olga55 [171]

Answer: 9.68 x 10^10 grams.

Explanation:

Given that:

Mass of CO2 = ?

Number of molecules of CO2 = 2.2x10^9 molecules

Molar mass of CO2 = ? (let unknown value be Z)

For the molar mass of CO2: Atomic mass of Carbon = 12; Oxygen = 16

= 12 + (16 x 2)

= 12 + 32 = 44g/mol

Apply the formula:

Number of molecules = (Mass of CO2 in grams/Molar mass)

2.2x10^9 molecules = Z/44g/mol

Z = 2.2x10^9 molecules x 44g/mol

Z = 9.68 x 10^10g

Thus, the mass of 2.2x10^9 molecules of CO2 is 9.68 x 10^10 grams.

4 0
2 years ago
Which of the following ways can the volume of a gas be changed, without changing its mass? Select all that apply.
pochemuha

Answer:

It can be spread into a smaller container

It can ve spread out into a larger container

It can be dissolved into a liquid

8 0
2 years ago
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To make a smore, 2 graham crackers, a piece of chocolate, and a marshmallow are needed. You have 5 graham crackers, 7 pieces of
vfiekz [6]
Limiting Reactant - The reactant in a Chemical Reaction that limits the amount of product that can be formed. 

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I hope this helped make your question easier ^_^
7 0
2 years ago
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Which of the following is true of gas?
lesantik [10]

Answer:

Gases mix easily because of their high kinetic energy and low inter-molecular forces.

Explanation:

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What holds a proton together?
Ipatiy [6.2K]

The answer is C. Strong nuclear force. Subatomic particles in the core of an atom (protons and neutrons) are held together by this type of force. The force is known to be one of the 4 fundamental forces of our universe.

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