What is the pressure of 0.5 mol nitrogen gas in a 5.0 l container at 203 k?

use ideal gas equation PV=nRT

find P fro the above equation all other are available in the your question.

V= volume

T= temperature

n= moles of gas

R is constant = 8.314 4621(75). J K−1 mol−1

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.