Atoms release energy when_
a. electrons move to a lower energy level
b. electrons move to a higher energy level
c. protons move to a higher energy level
d. protons move to a lower energy level

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.