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posted by Jennifer Wednesday, November 2, 2011 at 7:19pm.
Assume that you have 2.10 of the deadly gas hydrogen cyanide, . What is the volume of the gas at STP?
2.10 WHAT? 2.10 grams? Then 2.10/molar mass HCN = moles. Then moles x 22.4L = volume in L.
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