A balloon contains 0.950 of nitrogen gas at a volume of 25.5 L. How many grams of N2 should be released from the balloon to bring the volume to 17.3 L? g N2

4.27 g

Explanation:

We can write that for a gas kept at constant pressure and temperature, the number of moles of the gas is directly proportional to its volume:

Which can be rewritten as

where here we have:

is the initial number of moles

is the initial volume of the gas

is the final volume of the gas

So the final number of moles is

So the number of moles that should be released from the balloon is:

The molar mass of gas N2 is

Therefore, the mass of gas that should be released is:

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