Chemistry Section Review 9.2

For the reaction represented by the equation CH4 + 2O2 --> 2H2O + CO2, how many moles of carbon dioxide are produced from the combustion of 100. g of methane? a). 6.23 mol b). 10.8 mol c). 12.5 mol d). 25 mol

A

For the reaction represented by the equation N2 + 3H2 --> 2NH3, how many moles of nitrogen are required to produce 18 mol of ammonia? a). 9.0 mol b). 18 mol c). 27 mol d). 36 mol

A

For the reaction represented by the equation Pb(NO3)2 + 2KI => PbI2 + 2KNO3, how many moles of lead(II) iodide are produced from 300. g of potassium iodide and an excess of Pb(NO3)2? a). 0.904 mol b). 1.81 mol c). 3.61 mol d). 11.0 mol

A

For the reaction represented by the equation 2Na +Cl2 --> 2NaCl, how many grams of chlorine gas are required to react completely with 2 mol of sodium? a). 35.5 g b). 70.9 g c). 141.8 g d). 212.7 g

B

For the reaction represented by the equation 3Fe + 4H2O --> Fe3O4 + 4H2, how many moles of iron(111) oxide are produced from 500 g of iron in an excess of H20? a). 1.04 mol b). 2.98 mol c). 8.95 mol d). 12.98 mol

B

For the reaction represented by the equation 2HNO3 + Mg(OH)2 ® Mg(NO3)2 + 2H2O, how many grams of magnesium nitrate are produced from 8.00 mol of nitric acid, HNO3, and an excess of Mg(OH)2? a). 148 g b). 445 g c). 593 g d). 818 g

C

For the reaction represented by the equation 2Na + 2H2O --> 2NaOH + H2, how many grams of sodium hydroxide are produced if 3.0 mol of sodium with an excess of water? a). 40. g b). 80. g c). 120 g d). 240 g

C

Ffor the reaction represented by the equation Cl2 + 2KBr --> 2KCl + Br2, how many moles of potassium chloride can be produced from 119 g of potassium bromide? a).o.119 mol b). 0.236 mol c). 0.581 mol d). 1.00 mol

D

For the reaction represented by the equation 2H2 + O2 => 2H2O, how many grams of water are produced from 6.00 mol of hydrogen? a). 2.oo g b). 6.00 g c). 54.0 g d). 108 g

D

For the reaction represented by the equation 2KClO3 --> 2KCl + 3O2, how many moles of potassium chlorate are required to produce 250. g of oxygen? a). 2.00mol b). 4.32 mol c). 4.97 mol d). 5.21 mol

D

For the reaction represented by the equation C + 2H2 => CH4, how many moles of hydrogen are required to produce 10 mol of methane, CH 4? a). 2 mol b). 4 mol c). 10 mol d). 20 mol

D

For the reaction represented by the equation SO3 + H2O => H2SO4, how many grams of sulfuric trioxide can be produced from 4.00 g of sulfur acid in an excess of water? a). 80.0 g b). 160. g c). 240. g d). 320. g

D