How many H atoms are in 39.6g sample (NH₄)₂SO₄?

How many grams of Copper can be obtained from 10.0g sample of Cu₂S?

What mass of CH₄ is required to react completely with a 45.2g sample of O₂?

CH₄ + 2O₂ -> CO₂ + 2H₂O

A 15.6g sample of C₆H₆ is mixed with excess HNO₃ and 18.0g of C₆H₅NO₂ is isolated. What is the percent yield of the product?

C₆H₆ + HNO₃ -> C₆H₅NO₂ + H₂O

The percent yield for the synethesis of phosphorous pentachloride is 85.0% What mass of PCl₅ would be expected from the reaction of a 28.5g sample of PCl₃ with excess chloride?

PCl₃ + Cl₂ -> PCl₅

What mass of CO₂ is produced whan a 8.0g sample of CH₄ reacts with a 48.0g sample of O₂ in the following equation?

CH₄ + 2O₂ -> CO₂ + 2H₂O

Au(OH)₃ is used to electroplate gold onto other metals. If a 20.0g sample of KAuCl₄ is mixed with a 25.0g sample of Na₂CO₃ how many grams of Au(OH)₃ will theroretically be produced?

2KAuCl₄ + 3Na₂CO₃ + 3H₂O ->

2Au(OH)₃ + 6NaCl + 2KCl + 3CO₂

Water can be electrically decomposed to produce hydrogen and oxygen gases. Calculate the mass of water decomposed to produce 84.2g of hydrogen chloride, when hydrogen gas is combined with chlorine gas per the following series of reactions.

2H₂O -> 2H₂ + O₂

H₂ + Cl₂ -> 2HCl