How many grams of ZnO would you need to produce 50 g of ZnCl2? (The atomic mass of Zn is 65.38 and of Cl is 35.45.) ZnO(s) + 2HCl(aq) → ZnCl2 (s) + H2O(l) 17.1 g 29.8 g 59.7 g 83.8 g