6. Write the balanced equation for the reaction first. Sulfur combines with iron to form iron(II) sulfide. In an experiment, 15.24 g of Fe are allowed to react with 17.34 g of sulfur What is the limiting reactant? The reactant in excess? What mass of FeS is created?
7. Write the balanced equation for the reaction first. Sulfur reacts with oxygen to produce sulfur trioxide gas. If 3.15 g of sulfur reacts with 5 g of oxygen, what is the limiting reactant? How many grams of sulfur trioxide will be produced?
8. Write the balanced equation for the reaction first. In a double replacement reaction lead(II) nitrate reacts with sodium iodide. Given 5.0 grams of lead (II) nitrate and 3.0 grams of sodium iodide, how many grams of sodium nitrate can be formed?
9. Write the balanced equation for the reaction first. In a double replacement reaction copper (II) chloride combines with sodium nitrate. When a student combines 3 grams of copper (II) chloride react with 4 grams of sodium nitrate, how much sodium chloride is produced?
10. In the equation below methyl alcohol, CH3OH, is formed when carbon monoxide combines with hydrogen gas. CO(g) + 2H2(g) –> CH3OH(l). When 11 g H2(g) and 37.25 g CO(g) are combined, how many grams of methyl alcohol are produced?
11. In the following reaction 8 grams of ethane are burned and 11 grams of CO2 are collected. What is the percent yield? 2C2H6 + 7O2 –> 4CO2 + 6H2O
12. Write the balanced equation for the reaction first. Aluminum combines with excess copper (II) sulfate in a single replacement reaction.
13. 3.7 grams of aluminum combine with excess copper(II) sulfate with 10 grams of copper produced. What is the percent yield? The equation is balanced below.
2Al + 3CuSO4 –> Cu + Al2 (SO4)3
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