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chemistry problem!!! help!!!?

chemistry problem!!! help!!!? - Chemistry Forum

chemistry problem!!! help!!!? - Chemistry Forum. Discuss chemical reactions, chemistry.


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Old 10-27-2008, 04:19 AM
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Default chemistry problem!!! help!!!?



A flask was weighed and filled with N2 gas to a fixed temperature and pressure. The mass of nitrogen in the flask was found to be 0.80 grams. The same flask was flushed and filled with a different and unknown gas, confined under the same conditions. The mass of this gas was found to be 3.50 grams. Calculate the molar mass of the unknown gas to two significant figures. Enter your answer in scientific notation. For example: 3.6E2.
Please help! I have no clue.... step by step process please!
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