1)Calculate the molar masses for the following compounds. a)NH4NO3 b) N2O5 c)NaCN d)(NH4)2SO4 2.a)What is the volume of 0.001 mol of hydrogen (H2) gas at STP? b)What is the mass of 5.6 L of CO2 gas at STP? 3)a What is the total number of atoms found in 3 moles of a N2 molecule? b. Calculate the number of helium (He) atoms if 0.05 moles of He is given. 4.a)What is the mass of 3 moles of NaOH? b)What is the mole number of 22 g of CO2 gas? 5.a)What is the number of moles of 224 L Chlorine (Cl2) gas at STP? b) Find the masses for the following substances in grams- 1)1.5 mol of water 2)20 mol of C₂H6 6. If 10 moles of oxygen (O2) molecules are given,calculate the volume of the oxygen molecules at STP. 7. What is the mass of 3 moles of NaOH?​