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7MODULE 5 UNIT 1Assignment Part B1. Calculate the mass for each of the following cases: (6 points)a)3.5 moles of KCl K : 39.10 + Cl : 35.45 = 74.55g/mol. X 3.5mol = b)20 L of gaseous ammonia at 200 °C and 250 kPa NHN: 14.01g + H:1.01g (x3= 3.03g) = 17.04g/mol.3 c)35.6 mL of gaseous methane at 10 °C and 950 kPa CH42. How many molecules are there in each of the following cases? (8 points)b)3.5 x 105g of lithium oxide, Li2OLi: 6.94 (x2= 13.88) + O:16.00 = 29.88gc)3.5 mL of gaseous helium, He, at NTP conditions-d)3.5 x 103L of carbon dioxide at 35 °C and 80 kPa.3.5 x 103. Calculate the total number of atoms contained in each of the following cases: