Asked by Andrew

A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0). If the partial pressure of argon is 200. torr, what is the pressure of methane, in torr?

I am coming out with 443torr, but the listed options are

80.0 torr
b.
200. torr
c.
256 torr
d.
500. torr
e.
556 torr

Best Regards,

Andrew Q
Answered by Damon
See below, I got 500
Answered by Andrew
I did again, using (molecular weight 16.0) and (atomic weight 40.0), instead of the molar masses to convert from g to mol and I used a 50g imaginary sample.

It is pretty close to 500. torr, maybe just a rounding error?
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