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Oksanka [162]
2 years ago
11

Explain why in the early morning just before dawn breaks, the temperature of the air

Chemistry
1 answer:
Oksanka [162]2 years ago
7 0

Answer:

Once the sun comes up, the sunlight excites the cold air in the first foot or so above the ground (which can be 10 or more degrees colder), which causes it to move around and mix into the next several feet of air. That “mixing upward” drops the temperature of the air at thermometer level.

Explanation:

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Tim wants to store 0.122 moles of helium gas at 203 kPa and 401 K. Which is the volume of the helium gas needed for storage?
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 The  volume  of Helium gas needed for storage  is 2.00 L (answer C)


 <u><em> calculation</em></u>

 The volume of Helium is calculated using ideal gas equation

That is Pv =nRT

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V(volume)=?

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make V the  subject of the formula  by diving both side  by P

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V={[0.122  moles x 8.314 L. KPa/mol.K  x 401 K]  / 203 KPa} = 2.00 L


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