)nitrogen gas is heated so that it undergoes the process pictured below. how much heat is required to do this? under these conditions nitrogen behaves like an ideal gas. note that 1 atm = 101 kpa.

(approximately 400 J)

It seems like the question is not complete, but I will asume the volume is changing from 1000 to 3000  cm3.  under constant presure(2 atm).

Explanation:

So, this is called "Isobaric process" because the presure is not changing while the volume does.

So, you just have to use the ecuation at the image.

P(V2-V1)

=2 atm (3000-1000)cm3

=4 atm . L = 405,26 J =   (approximately 400 J)

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.