Silver and nitric acid react according to the following balanced equation: 3 Ag(s) + 4 HNO3(aq) à 3 AgNO3(aq) + 2 H2O(l) + NO(g)

How many moles of silver are needed to react with 40 moles of nitric acid? 30 mol Ag
From the amount of nitric acid given in Part A, how many moles of silver nitrate will be produced? 20 mol AgNO3
From the amount of nitric acid given in Part A, how many moles of water will be produced? 38 mol H2O
From the amount of nitric acid given in Part A, how many moles of nitrogen monoxide will be made? 76 mol NO

I have the answers I just need proof. Can someone do the work and show me?