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illestchemist illestchemist
wrote...
Posts: 82
Rep: 1 0
12 years ago
How many moles of air are there in a flask with a volume of 125 mL if the pressure is 745 mm Hg and the temperature is 22 Degree C?
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wrote...
12 years ago
PV=nRT

You are given P, V, T, and R is a constant,

so solve for n.  Make sure you use the correct units (for example T needs to be in K).
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