Q1. When 4.48 g of iron was reacted with an excess of copper sulphate solution, 5.08 g of copper was produced. How much copper would be produced if we increased the amount of iron to 13.44 g but kept the copper sulphate in excess?


Q2. What would be the mass of aluminium oxide (alumina) produced if 135 g of aluminium was burned in air?



Q3. 3.25 g of zinc reacts with an excess of hydrochloric acid to produce 6.80 g of zinc chloride. what would happen if the amount of zinc was doubled but the hydrochloric acid remained in excess?



Q4. Using the same scenario as above, how much zinc chloride will be produced if we dissolve exactly 13 g of zinc in excess hydrochloric acid?


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