Answer- when heated, the elections in atoms absorb energy and are elevated to higher energy levels.
The reaction is as follows:
N2+3H2---->2NH3
the number of moles of N2 is 49.8g/14gmol^-1=3.56mol
the number of moles of H2 is 10.7g/2gmol^-1=5.35mol
here, since the ratio of N2/H2 is 1/3, we can see that H2 is the limiting reagent. therefore, the reaction proceeds as follows:
N2 + 3H2 ---------------> 2NH3
5.36mol (2/3)(5.36mol)=3.57mol
therefore, the number of moles of ammonia formed is 3.57mol. at STP, P=1atm, T=273K.
Therefore, V(NH3)=(3.57)(22.38)=79.822 L
23.22%:
2.5 L in mL : 2.5 * 1000 = 2500 mL
23.22 g ----------- 100 mL
? g ------------- 2500 mL
m = 2500 * 23.22 / 100
m = 58050 / 100
m = 580,5 g
If it is correctly rounded to three sig figs then the number should become 599.292 (rounded should be 600)