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4 years ago

A sample of helium gas occupies 12.9 L at 315 K and 1.20 atm.

Chemistry

1 answer:

julsineya [31]4 years ago

5 0

Answer:

There are 0,6 moles of helium.

Explanation:

We use the ideal gas formula, we use the gas constant R = 0.082 l atm / K mol and we solve for n (number of moles) of the formula:

PV=nRT --> n= PV/RT

n= 1,20 atm x 12,9 L/ 0.082 l atm / K mol x 315 K= 0,599303135 moles

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Answer: The correct answer is option A.

Explanation:

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2. Beta particles: These particles are released when a nuclei undergoes beta-minus decay process.

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Therefore, the correct answer is option A.

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3 years ago

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Answer:

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Explanation:

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