50 POINTS How many liters of O2 gas are in 4.21 moles? and How many liters of PH3 gas are in 14.71 moles?

Explanation:

I mol of water = 22.4 lts of O2

thus, 4.21 moles of water = 4.21× 22.4= 94.304 lts.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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