Homework Help: Chemistry

Posted by Amy~ on Sunday, August 29, 2010 at 10:37pm.

Which of the gases most closely resembles an ideal gas at standard temperature and pressure?

1) CO2
2) NH3
3) HI
4) H2
5) H2O

why would it be H2

Chemistry - DrBob222, Sunday, August 29, 2010 at 11:33pm
Smallest molecule so it isn't polarizable (has no dipole moment---CO2 doesn't have one either). Essentially a pure covalent bond so it is not ionic.

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