Question 1

0.100 mole of lithium has a mass of

Accepted Answer

A) 0.700 g. 
B) 6.94 g. 
C) 3.00 g. 
D) 0.300 g. 
E) 0.694 g. 
A) 0.700 g. 
B) 6.94 g. 
C) 3.00 g. 
D) 0.300 g. 
E) 0.694 g.

Question 2

What is the molar mass of copper(II) sulfate,

Accepted Answer

A)   16.0 g 
B)   111.6 g 
C)   159.6 g 
D)   63.6 g 
E)   319.2 g 
A)   16.0 g 
B)   111.6 g 
C)   159.6 g 
D)   63.6 g 
E)   319.2 g

Question 3

The ________ is the energy difference between reactants and products in a chemical reaction.

Accepted Answer

A) H reactants 
B) product energy 
C) H products 
D) overall energy 
E) heat of reaction 
A) H reactants 
B) product energy 
C) H products 
D) overall energy 
E) heat of reaction

Question 4

One mole of neon has a mass of

Accepted Answer

A)   10.0 g 
B)   20.2 g 
C)   14.0 g 
D)   30.2 g 
E)    
A)   10.0 g 
B)   20.2 g 
C)   14.0 g 
D)   30.2 g 
E)

Question 5

What is the mass of 0.425 mole of KCN?

Accepted Answer

The answer of What is the mass of 0.425 mole...

Question 6

Avogadro's number is the number of

Accepted Answer

A)  grams in 1 mole of a substance. 
B)  moles in  
grams of an element. 
C)  moles in  
amu of an element. 
D)  amu in 1 mole of a substance. 
E)  particles in 1 mole of a substance. 
A)  grams in 1 mole of a substance. 
B)  moles in  
grams of an element. 
C)  moles in  
amu of an element. 
D)  amu in 1 mole of a substance. 
E)  particles in 1 mole of a substance.

Question 7

How many kcal are produced when  32.0 g of   react?

Accepted Answer

A) 6.81 kcal 
B) 218 kcal 
C) 436 kcal 
D) 109 kcal 
E) 698 kcal 
A) 6.81 kcal 
B) 218 kcal 
C) 436 kcal 
D) 109 kcal 
E) 698 kcal

Question 8

Calculate the molar mass of magnesium chloride,

Accepted Answer

A)   125.9 g 
B)   70.0 g 
C)   59.8 g 
D)   24.3 g 
E)   95.2 g 
A)   125.9 g 
B)   70.0 g 
C)   59.8 g 
D)   24.3 g 
E)   95.2 g

Question 9

The number of moles of oxygen gas needed to react with 4.0 moles of Mg is

Accepted Answer

A) 1.0 mole. 
B) 2.0 moles. 
C) 3.0 moles. 
D) 4.0 moles. 
E) 6.0 moles. 
A) 1.0 mole. 
B) 2.0 moles. 
C) 3.0 moles. 
D) 4.0 moles. 
E) 6.0 moles.

Question 10

For the question(s)that follow, consider the following equation.  
-

Accepted Answer

A) 101 g 
B) 201 g 
C) 60.8 g 
D) 50.4 g 
E) 30.4 g 
A) 101 g 
B) 201 g 
C) 60.8 g 
D) 50.4 g 
E) 30.4 g

Question 11

In this reaction, what is the substance oxidized?

Accepted Answer

A) hydrogen 
B) zinc chloride 
C) chlorine 
D) zinc 
E) oxygen 
A) hydrogen 
B) zinc chloride 
C) chlorine 
D) zinc 
E) oxygen

Question 12

What type of reaction is the following?

Accepted Answer

single rep

Question 13

Acetylene gas,   reacts with oxygen according to the following equation. If  1.00  mole of acetylene reacts completely with sufficient oxygen, how many moles of carbon dioxide are produced?

Accepted Answer

2.00  moles of 11ec

Question 14

How many moles are in  37.6 g of

Accepted Answer

The answer of How many moles are in  37.6...

Question 15

When 4 moles of aluminum are allowed to react with an excess of chlorine gas,   how many moles of aluminum chloride are produced?

Accepted Answer

A)  1 mole 
B)  2 moles 
C)  3 moles 
D)  4 moles 
E)  5 moles 
A)  1 mole 
B)  2 moles 
C)  3 moles 
D)  4 moles 
E)  5 moles

Question 16

What is the coefficient of hydrogen,   , when the following equation is balanced?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 17

For the question(s)that follow, consider the following equation.  
-What is the correct form of the conversion factor needed to convert the number of moles of   to the number of moles of   produced?

Accepted Answer

A)     
B)     
C)     
D)     
E)    
A)     
B)     
C)     
D)     
E)

Question 18

What is the molar mass of   a substance formerly used in medicine as an antacid?

Accepted Answer

A) 118 g 
B) 214 g 
C) 150. g 
D) 71.3 g 
E) 263 g 
A) 118 g 
B) 214 g 
C) 150. g 
D) 71.3 g 
E) 263 g

Question 19

Barium chloride and sodium sulfate react according to the following equation.   Answer the question(s)that follow about this reaction.
-How many grams of barium sulfate can be produced from 20.8 g of barium chloride?

Accepted Answer

A) 23.3 g 
B) 233 g 
C) 137 g 
D) 1.37 g 
E) 2.33 g 
A) 23.3 g 
B) 233 g 
C) 137 g 
D) 1.37 g 
E) 2.33 g

Question 20

Any reaction that absorbs 150 kcal of energy can be classified as

Accepted Answer

A) exothermic. 
B) endothermic. 
C) either exothermic or endothermic. 
A) exothermic. 
B) endothermic. 
C) either exothermic or endothermic.

Exam 7: Chemical Reactions and Quantities

0.100 mole of lithium has a mass of

What is the molar mass of copper(II) sulfate,

The ________ is the energy difference between reactants and products in a chemical reaction.

One mole of neon has a mass of

What is the mass of 0.425 mole of KCN?

Avogadro's number is the number of

How many kcal are produced when 32.0 g of react?

Calculate the molar mass of magnesium chloride,

The number of moles of oxygen gas needed to react with 4.0 moles of Mg is

For the question(s)that follow, consider the following equation. -

In this reaction, what is the substance oxidized?

What type of reaction is the following?

Acetylene gas, reacts with oxygen according to the following equation. If 1.00 mole of acetylene reacts completely with sufficient oxygen, how many moles of carbon dioxide are produced?

How many moles are in 37.6 g of

When 4 moles of aluminum are allowed to react with an excess of chlorine gas, how many moles of aluminum chloride are produced?

What is the coefficient of hydrogen, , when the following equation is balanced?

For the question(s)that follow, consider the following equation. -What is the correct form of the conversion factor needed to convert the number of moles of to the number of moles of produced?

What is the molar mass of a substance formerly used in medicine as an antacid?

Barium chloride and sodium sulfate react according to the following equation. Answer the question(s)that follow about this reaction. -How many grams of barium sulfate can be produced from 20.8 g of barium chloride?

Any reaction that absorbs 150 kcal of energy can be classified as

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