An atom is a. the smallest unit of matter that maintains its chemical identity.

b. the smallest unit of a compound.

c. always made of carbon.

d. smaller than an electron

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.