chapter 9 chemistry studyguide

For the reaction represented by the equation 2H2+ O2= 2H20, how many moles of water can be produced from 6.0 mol of oxygen?

12 mol

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

4:3

For the reaction represented by the equation AgNO3+NaCl=NaNO3+AgCl, how many moles of silver chloride,AgCl, are produced from 7.0 mol of silver nitrate AgNO3?

7.0 mol

given the equation 3A + 2B = 2C, the starting mass of A, and its molar mass, and you are asked to determine the moles of C produced, your first step in solving the problem is the multiply the given mass of A by

I mol A __________ molar mass A

if one knows the mole ratio of a reactant and product in 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

coefficients

the units of a molar mass are

g/mol

IN the chemical equation reaction represented by the equation wA +xB= yC + zD, a comparison of the number of moles of A to the number of moles of C would be a

mole ratio

each of the four types of reaction stoichiometry problems requires using a_ _ _ _

mole ratio

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

1:2

For the reaction represented by the equation C+2H2= CH4, how many moles of hydrogen are required to produce 10 ml of methane , 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 representedby the equation N2(g)+ 3H2(g) =2NH3(g). To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required?

3.0 mol

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

3:2

in the equation 2KClO3= 2KCl + 3O2, how many moles of oxygen are produced when 3.0 mol of KClO3, decompose completely?

4.5 mol

For the reaction represented by the equation N2+3H2=2NH3, how man moles of nitrogen are required to produce 18 mol of ammonia?

9.0 mol

The proportions of the reactants and product involve in a chemical reaction are shown by the _______________ in the balanced chemical equation describing the reaction.

Coefficients

a balanced chemical equation allows one to determine the_ _ _ _ _

mole ratio of any two substances in the reaction

the coefficients in a chemical equation represent the_ _ _ _ _ _ _ _

relative numbers of moles of reactants and products.

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

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

synthesis reaction

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

in the chemical equation wA + xB = yC + zD, if one knows the mass of A and the molar masses of A,B,C, and D, one can determine

the mass of any of the reactants or products