Chemistry help!!?

Posted on 2015-11-20 05:42:00 in Chemistry by

1) If 1.0 mol of N2 and 3.0 mol of H2 in a closed container initially at STP react completely in the reaction shown below, then the final pressure in the flask will be ________ atm at 273 K.

N2(g) + 3 H2(g) ? 2 NH3(g)

The answer is not 1.00 atm and it's not 2.00 atm. I don't know what it is :( please help

2) According to the kinetic molecular theory of gases, at 298 K the average kinetic energy of O2 is ________ the average kinetic energy of CO2.

I typed in equal but it says it's not correct

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