1.     Calcium chloride, CaCl2, is formed as shown by the following equation: Ca(OH)2 + 2HCl --> CaCl2 + 2H2O

How many grams of calcium chloride are formed by the complete reaction of 37 grams of calcium hydroxide, Ca(OH)2?

2.     A solution of iron(III) chloride, FeCl3, are used in photoengraving and to make ink. This compound can be made by the following reaction.2Fe + 3Cl2 --> 2FeCl3

(a) How many moles of FeCl3 form from 24 moles of Cl2?

(b) How many moles of Fe are needed to combine with 24 moles of Cl2 by this reaction?

3.     Aluminum oxide, Al2O3, a buffing powder, is to be made by combining 5 grams of aluminum with oxygen, O2. How much oxygen is needed in moles? In grams? (you should write a balanced equation first!!)

4.     Calculate how many grams of iron can be made from 16.5 grams of Fe2O3 by the following equation.Fe2O3 + 3H2 --> 2Fe + 3H2O

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Valerivaleeva    2   22.11.2020 13:30    0