Chapter Test for W

for the reaction represented by the equation Pb(NO3)2+2Kl->PbI2+2KNO3, how many moles of lead(ll) iodide are produced from 300 grams of potassium iodide and an excess of Pb(NO3)2

0.904 mol

for the reaction represented by the equation Cl2+2KBr->2KCl+Br2, how many moles of potassium chloride are produced from 119g of potassium bromide

1 mol

which coefficients correctly balance the formula NH4NO3->N2+H2O

1,1,2

for the reaction represented by the equation 2H2+O2->2H2O,, how many grams of water are produced 6.00 mol of hydrogen?

108 g

how many moles of Ag can be produced if 350 g of Cu are reacted with excess AgNO3 according to the equation Cu(s)+2AgNO3(AQ)-->2Ag(s)+Cu(NO3)2(aq)

11 moles

for the reaction represented by the equation 2H2+O2->2H2O, how many moles of water can be produced from 6.0 mol of oxygen?

12 mol

for the reaction represented by the equation 2Na+2H2O->2NaOH+H2, how many grams of sodium hydroxide are produced from 3.0 mol of sodium with an excess of water?

120g

in the reaction represented by the equation N2+3H2->2NH3, what is the mole ratio of nitrogen to ammonia

1:2

Ozone, O3, is produced by the reaction represented by the following equation: NO2(g)+O2(g)->NO(g)+O3(g) What mass of ozone will form from the reaction of 2.0 g of NO2 in a car's exhaust and excess oxygen?

2.1 g O3

for the reaction represented by the equation 3Fe+4H2O->Fe3O4+4H2, how many moles of iron (lll)oxide are produced from 500 g of iron in an excess of H2O

2.98 mol

for the reaction represented by the equation C+2H2->CH4, how many moles of hydrogen are required to produce 10 mol of methane, or CH4?

20 mol

in the reaction represented by the equation C+2H2->CH4, what is the mole ratio of hydrogen to methane

2:1

the haber process for producing ammonia commercially is represented by the equation N2(g)+3H2(g)->2NH2(g). to completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required?

3.0 mol

for the reaction represented in the equation SO3+H20->H2SO4, how many grams of sulfur trioxide are required to produce from 4.00 mol of sulfuric acid in an excess of water

320 g

what mass of PCl3 forms in the reaction of 75.0 g P4 with 275 g Cl2? P4+6Cl2-->4PCl3

332.548 g

What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal react with excess water according to the equation 2Na(s)+2H2O(l)-->2NaOH(aq)+H2(g)

34.8 g

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)2SO4(aq)

3960 g

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

3:2

In the equation 2KClO2->2KCl+3O2, how many moles of oxygen are produced when 3.0 mol of KClO3 decompose completely

4.5 mol

what mass in grams of hydrogen gas is produced if 20.0 mol of Zn are added to excess hydrochloric acid according to the equation Zn(s)+2HCl(aq)--> ZnCl2(aq)+H2(g)

40 g H2

in the reaction represented by the equation 2Al2O3-> 4Al+3O2, what is the mole ratio of aluminum to oxygen

4:3

which equation is not balanced?

4h2+2O3+H2O

for the reaction represented by the equation 2KlO3->2KCl+3O2 how many moles of potassium chlorate are required to produce 250 g of oxygen

5.2 mol

for the reaction represented by the equation 2Fe+O2->2FeO, how many grams of iron (ll) oxide are produced from 8.00 mol of iron with an excess of oxygen?

575 g

for the reaction represented by the equation 2HNO3+Mg(OH)2->Mg(NO)2+2H2O how many magnesium nitrate are produced from 8.00 mol of nitric acid, HNO3 and an excess of Mg(OH)2

593 g

for the reaction represented by the equation CH4+2O2->CO2+2H2O, how many moles of carbon dioxide are produced from the combustion of 100 g of methane

6.23 mol

What mass in grams of potassium chloride is produced if 100g of potassium chlorate decompose according to the following equation 2KClO3(s)---> 2KCl(s) + 3O2 (g)

60.08 g KCl

for the reaction represented by the equation, AgNO3+NaCl->NaNO3+AgCl, how many moles of silver chloride, AgCl, are produced from 7.0 moles of silver nitrate AgNO3?

7.0 mol

for the reaction represented by the equation 2Na+Cl2->2NaCl how many grams of chlorine gas are required to react completely with 2.00 mol of sodium

70.9 g

What mass in grams of 1- chloropropane (C3H7Cl) is produced if 400 g of propane react with the excess chlorine gas according to the equation C3H8+Cl2-->C3H7Cl + HCl

712

When the formula equation Fe3O4+Al->Al2O3+Fe is correctly balanced the coefficient 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 ammonia

9.0 mol

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

which of the following would not be studied in the branch of chemistry called stoichiometry?

The amount of energy required to break the ionic bonds in calcium fluoride

what is the measured amount of a product obtained from a chemical reaction in a lab

actual yield

to determine the limiting reactant in a chemical reaction, one must know the

available amount of each reactant

if one knows the mole ratio of a reactant and product is a chemical reaction, one can

calculate the mass of the product produced from a known mass of reactant

to balance a chemical equation it may be necessary to adjust the

coeffcients

the proportions of the reactants and products involved in a chemical reaction are shown by the ________________ in the balanced chemical equation describing the reaction

coefficients

the units of molar mass are

g/mol

in most chemical reactions the amount of product obtained is

less than the theoretical yield

a chemical reaction involving substances A and B stops when B is completely used. B Is the

limiting reactant

which reactant controls the amount of product formed in a chemical reaction

limiting reactant

the expression below converts the quantity, mass HCl, to the quantity, ___________________ mass HCl x 1 mol HCl/ molar mass HCl x 1 mol Cl2/ 2 mol HCl x molar mass Cl2/1 mol Cl2

mass Cl2

the expression below converts the quantity, mass HCl, to the quantity, _________________ mass HCl x 1 mol HCl/molar mass HCl x 1 mol Cl2/ 2 mol HCl

mol Cl2

each of the four types of reaction stoichiometry problems requires using a

mole ratio

a balanced chemical equation allows one to determine the

mole ratio of any two substances in the reaction

The unit of the following expression is ________________ 100g H2O x molH2O/18.02g H2O

moles H2O

a chemical equation is balanced when the

number of atoms is equal on both sides

the efficiency of a reaction is described by the _______________ yield

percent

a chemist interested in the efficiency of a chemical reaction would calculate the

percentage yield

what is the ratio of the actual yield to the theoretical yield, multiplied by 100%

percentage yield

when the limiting reactant in a chemical reaction is completely used, the

reaction stops

the coefficients in a chemical equation represent the

relative numbers of moles of reactants and products

in what kind of reaction do two or more substances combine to form a new compound

synthesis

if the percentage yield is equal to 100%, then

the actual yield is equal to the theoretical yield

what is the maximum possible amount of product obtained in a chemical reaction

theoretical yield