Chapter 9

For the reaction represented by the equation 2H2 + o2 -> 2H2O, how many moles of water can be produced from 6.o mol of oxygen?

12 mol

For the reaction represented by the equation 2HNO3 +Mg(NO3)2 -> 2H2O, how many grams of magnesium nitrate are produced from 8.0mol of nitric acid, HNO3, and an excess of Mg(OH)2?

593g

SOLVE: Determine the number of moles of N2 that are required to produce 12 mol of Bh3 using the equation N2 + 3H2 -> 2NH3

6 mol N2

Which reactant controls the amount of product formed in chemical reaction?

limiting reactant

SOLVE: How many grams of ammonium sulfate can be produced if 30.0 mol of H2SO4 react with excess NH3 according to the equation 2NH3(aq) + H2SO4(aq) -> (NH4)2SO2(aq)?

3960g

In the reaction represented by the equation N2 + 3H2 -> 2NH3 what is the mole ratio of hydrogen to ammonia?

3:2

For the reaction represented by the equation 2Na + 2H20 -> 2NaOH +H2, how many grams of hydrogen are produced if 120. g of sodium and 80. g of water are available?

4.5g

SOLVE: Determine the maximum number of moles of product that can be produced from 7.0 mol Al and 8.0 mol Cl2 according to the equations 2Al + 3Cl2 -> 2AlCl3

5.3 mol AlCl3

For the reaction represented by the equation CH4 + 2O2 -> 2H2O +CO2, calculate the percentage yield of carbon dioxide if 1000. g of methane react with excess oxygen to produce 2300. g of carbon dioxide.

83.88%

When the formula equations Fe3O4 + Al -> Al2O3 + Fe is correctly balance the coefficients of Fe is number

9

For the reaction represented by the equation N2 + 3H2 -> 2NH3, how many moles of nitrogen are required to produce 18 mol of amnonia

9.0 mol

For the reaction represented by the equation SO3 +H2SO4, calculate the percentage if 500. g of sulfur trioxide react with excess water to produce 575 g of sulfuric acid.

93.9%

A balanced chemical equations allows to determine the

Mole ratio of any two substances in the reaction

Which branch of chemistry deals with the mass relationships of elements in compounds and the mass relationships among reactants and products in chemical reactions

Stoichiometry

SOLVE: Acetylene (C2H2) is burned as the fuel in welding torches when is combines with oxygen. As with reactions of this type, carbon dioxide and water are produced. a) Write and balance the chemical reaction for the burning of acetylene b) If 105 grams of acetylene are allowed to burn, and 263 grams of carbon dioxide are measured in the products, what is the percent yield in this reaction?

a) 2C2H2 + O2 -> 4CO2 + 2H2O b)74%

What is the? ratio of the actual yield to the theoretical yield, multiplies by 100%

percentage yield

The Haber process for producing ammonia commercially is represented by the equation N2(g) + 3H2(g) -> 2NH3(g). To completely convert 9.0 mol hydrogen gas to amnonia gas, how many molesof nitrogen gas are required?

3.0

In the equation 2KClO3 -> 2KCl +3O2, how many mole of oxygen are produced when 3.0 mol of KClO3 decompose completely?

4.5 mol

For the reaction represented by the equation 2H2 + O2 -> 2H2O, how many grams of water are produced from 6.0 mol of hydrogen?

108 g

Which coefficients correctly balances the formula NH4NO2-> N2 + H2O

1,1,2