How many moles are represented by 3.01x10^23 helium atoms a. 1 mole

b. 0.50 moles

c. 0.75 moles

d. 5 moles

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.