Question

what will be the value of one mole of H2O and one mole of NH3 at STP

Answer 1

So 1 ml has 1/22400 moles at STP.1 mole = 6.022 x 1023 molecules. So number of molecules of ammonia in 1 ml = 6.022 x 1023/22400. Now, multiply this number by 4 to get the total number of atoms as each molecule of ammonia has 4 atoms ( 1 N and 3 H).