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Wewaii [24]
3 years ago
6

How many moles of helium gas are contained in a 4.0 L flask at STP

Chemistry
1 answer:
Ratling [72]3 years ago
3 0
First, you convert liters to moles. 
Usually you have to go to grams but this is STP.

Get moles directly by dividing the 4 by STP (22.4)
\frac{4}{22.4} =0.17857142857
About 1.8*10^{-1} or 0.18 moles whichever your teacher prefers

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