What are orbitals? A. Regions of the atom that contain protons

B. Circular paths around the nucleus

C. Areas within an energy level that are occupied by electrons

D. Energy levels occupied by neutrons

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.