Chapter 11 Stoichiometry

Question 1

What are the component elements of sodium sulfate

Accepted Answer

oxygen, sulfur, sodium

Question 2

What is excess reactant?

Accepted Answer

reactant that does remain after chemical reaction stops

Question 3

In a chemical reaction,the reactant remaining after all of the other reactant has been used is?

Accepted Answer

excess reactant

Question 4

A balanced chemical equation allows you to determine the?

Accepted Answer

electron configuration of all elements in the reaction

Question 5

How many moles of H20 can be made using 1.6 mol of Nh3

Accepted Answer

2.4 mol H20

Question 6

which of the following is a balanced chemical equation

Accepted Answer

CH4 + 2O2 - CO2 + H

Question 7

convert 0.436 moles of ammonium chloride into its corresponding mass in grams

Accepted Answer

23.3 g of ammonium chloride

Question 8

convert 2.360 moles of lead (II) oxide into its corresponding mass in grams

Accepted Answer

526.8 g of lead (II) oxide

Question 9

Determine the % composition of calcium chloride (CaCl2)

Accepted Answer

%Ca = 36.1 %Cl = 63.9

Question 10

Is this equation balanced 2Fe203+ 3c-4fe+3C02

Accepted Answer

no

Question 11

Study of mass relationships among reactants and products in a chemical reaction is?

Accepted Answer

electron configuration

Question 12

chemists use stoichiometric calculations to predict what?

Accepted Answer

amount of reactants used and products formed

Question 13

which does not represent the law of conservation of mass

Accepted Answer

P4 + 5O2 2P4O10

Question 14

What is based on the law of conservation of mass?

Accepted Answer

stoichiometry

Question 15

Balance this chemical equation: Fe + Cl2 = FeCl3

Accepted Answer

2 Fe + 3 Cl2 = 2 FeCl3

Question 16

Mass of reactant =

Accepted Answer

mass of product

Question 17

stochiometric calculations must be based on?

Accepted Answer

the limiting reactant

Question 18

what's the first step in solving stochiometric problems

Accepted Answer

writing the balanced chemical equation

Question 19

In 2A1203-4A1+302 what is the mole ratio ?

Accepted Answer

10:6

Question 20

Balance this chemical equation: CH4 + Cl2 = CCl4 + HCl

Accepted Answer

CH4 + 4Cl2 = CCl4 + 4HCl

Questions 20