Identify the Gas at STP: 2.75 L & 5.39 g

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To identify the gas at STP given 2.75 L and 5.39 g, the ideal gas law PV=nRT is relevant, but additional calculations are necessary. The molar volume at STP is 22.4 L, which can help determine the number of moles of gas present. The weight of the gas can then be used to calculate its molar mass. By comparing the calculated molar mass with the options provided (N2, N2O, NO, F2, NF3), the correct gas can be identified. Understanding these principles is essential for solving the problem effectively.
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Homework Statement



At STP, 2.75 L of a gas weighed 5.39 g. The gas could be

a) N2
b) N2O
c) NO
d) F2
e) NF3

Homework Equations



I was thinking PV=nRT but it might not be.

The Attempt at a Solution



Nothing really.

Thanks!
 
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Oblivion77 said:
I was thinking PV=nRT but it might not be.

That's the right one, although not sufficient one.

Nothing really

Get back once you try.
 
Borek said:
That's the right one, although not sufficient one.



Get back once you try.


Do I need to use the fact that 1mol = 22.4L at STP?
 
Oblivion77 said:
Do I need to use the fact that 1mol = 22.4L at STP?

You may, although that's equivalent of using PV=nRT and entering standard TP (whatever that means).
 
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