PLS HELP I REALLY NEED IT IM ON THE VERGE OF TEARS How many liters of O2 at STP will react with 8.7 grams of C2H4 to form CO2 and H2O?

C2H4 + 3 O2 > 2 CO2 + 2 H2O
the answers could be
22
21
2.3
I though the answer would be 26.1 PLSPLSPLS HELP

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

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