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OpenStudy (anonymous):
If 0.765g of an unknown gas were collected at 741 torr and 95C in a 245 mL container, then what is the molecular weight of this unknown gas?
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OpenStudy (anonymous):
just use: pV= nRT from there calculate "n" and then use: n= m/M -> M=m/n
OpenStudy (anonymous):
just be careful about units, temperature in K, pressure in Pa, volume in m3, R=8,314 JK-1mol-1
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