Direction: Answer each problem. Use G-R-E-S-A Method to show the complete process of computation to obtain the correct answer. Use an extra sheet of paper if necessary. 1. What is the percent by mass if 8.Og copper is added to enough zinc to produce 100g an alloy? 2. You have 200g or a solution that contains 30g of hydrochloric acid (HCI), what percentage of your solution is made up of HCl acid? 3. Suppose you want to make 2000g of a solution of glucose in water that has 2.8% (m/m) concentration. How much glucose should you use?​