Question 1

What is the molar mass of sodium phosphate,

Accepted Answer

A)   308 g 
B)   119 g 
C)   164 g 
D)   226 g 
E)   354 g 
A)   308 g 
B)   119 g 
C)   164 g 
D)   226 g 
E)   354 g

Question 2

When  60.0 g of   reacts with excess   the actual yield of   is  112 g. What is the percent yield?

Accepted Answer

A) 67.9 % 
B) 46.4 % 
C) 187 % 
D) 53.6 % 
A) 67.9 % 
B) 46.4 % 
C) 187 % 
D) 53.6 %

Question 3

For the question(s)that follow, consider the following equation.  
-How many grams of   are needed to produce  150 g of

Accepted Answer

A)   23 g 
B)   18 g 
C)   46 g 
D)   93 g 
E)   130 g 
A)   23 g 
B)   18 g 
C)   46 g 
D)   93 g 
E)   130 g

Question 4

In an oxidation-reduction reaction, the substance oxidized always

Accepted Answer

A) experiences a loss of electrons. 
B) takes on oxygen atoms. 
C) experiences a gain of electrons. 
D) becomes a charged species. 
E) gives up hydrogen atoms. 
A) experiences a loss of electrons. 
B) takes on oxygen atoms. 
C) experiences a gain of electrons. 
D) becomes a charged species. 
E) gives up hydrogen atoms.

Question 5

How many moles of   are in  15.0 g of

Accepted Answer

A)   0.119  moles 
B)   0.111  moles 
C)   0.0861  moles 
D)   0.172  moles 
E)  2.61 x 103 moles 
A)   0.119  moles 
B)   0.111  moles 
C)   0.0861  moles 
D)   0.172  moles 
E)  2.61 x 103 moles

Question 6

For the question(s)that follow, consider the following equation.  
-When 2 moles of   are allowed to react, how many moles of   also react?

Accepted Answer

A)  6 moles 
B)  4 moles 
C)  1 mole 
D)  12 moles 
E)  8 moles 
A)  6 moles 
B)  4 moles 
C)  1 mole 
D)  12 moles 
E)  8 moles

Question 7

Find the mass of   that is produced when  10.0  grams of   react with  10.0 g of HCl according to the following equation.

Accepted Answer

A) 10.0 g 
B) 6.10 g 
C) 16.2 g 
D) 12.2 g 
E) 20.0 g 
A) 10.0 g 
B) 6.10 g 
C) 16.2 g 
D) 12.2 g 
E) 20.0 g

Question 8

When  85.0 g of   are mixed with  160 g of   the limiting reactant is

Accepted Answer

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

Question 9

How many atoms of neon are present in  1.30  moles of neon?

Accepted Answer

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

Question 10

4.00 moles of sodium have a mass of

Accepted Answer

A) 44.0 g. 
B) 23.0 g. 
C) 11.0 g. 
D) 4.60 g. 
E) 92.0 g. 
A) 44.0 g. 
B) 23.0 g. 
C) 11.0 g. 
D) 4.60 g. 
E) 92.0 g.

Question 11

1.25  moles of   have a mass of

Accepted Answer

A)   279 g. 
B)   299 g. 
C)   239 g. 
D)   191 g. 
E)   178 g. 
A)   279 g. 
B)   299 g. 
C)   239 g. 
D)   191 g. 
E)   178 g.

Question 12

What is the classification for this balanced reaction?

Accepted Answer

A) double replacement 
B) decomposition 
C) combination 
D) combustion 
E) single replacement 
A) double replacement 
B) decomposition 
C) combination 
D) combustion 
E) single replacement

Question 13

For the reaction:  
how many kcal are needed to react

Accepted Answer

A)   274 kcal 
B)   190 kcal 
C)  760. kcal 
D)   137 kcal 
E)   380 kcal 
A)   274 kcal 
B)   190 kcal 
C)  760. kcal 
D)   137 kcal 
E)   380 kcal

Question 14

What is the molar mass of NaBr?

Accepted Answer

The answer of What is the molar mass of NaBr?...

Question 15

Barium chloride and sodium sulfate react according to the following equation.   Answer the question(s)that follow about this reaction.
-How many moles of barium sulfate are produced from 0.100 mole of barium chloride?

Accepted Answer

A) 0.100 mole 
B) 1.00 mole 
C) 2.00 moles 
D) 0.0100 mole 
E) 0.200 mole 
A) 0.100 mole 
B) 1.00 mole 
C) 2.00 moles 
D) 0.0100 mole 
E) 0.200 mole

Question 16

In the following reaction, when the equation is correctly balanced, what is the correct coefficient for aluminum chloride?

Accepted Answer

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

What is the molar mass of sodium phosphate,

When 60.0 g of reacts with excess the actual yield of is 112 g. What is the percent yield?

For the question(s)that follow, consider the following equation. -How many grams of are needed to produce 150 g of

In an oxidation-reduction reaction, the substance oxidized always

How many moles of are in 15.0 g of

For the question(s)that follow, consider the following equation. -When 2 moles of are allowed to react, how many moles of also react?

Find the mass of that is produced when 10.0 grams of react with 10.0 g of HCl according to the following equation.

When 85.0 g of are mixed with 160 g of the limiting reactant is

How many atoms of neon are present in 1.30 moles of neon?

4.00 moles of sodium have a mass of

1.25 moles of have a mass of

What is the classification for this balanced reaction?

For the reaction: how many kcal are needed to react

What is the molar mass of NaBr?

Barium chloride and sodium sulfate react according to the following equation. Answer the question(s)that follow about this reaction. -How many moles of barium sulfate are produced from 0.100 mole of barium chloride?

In the following reaction, when the equation is correctly balanced, what is the correct coefficient for aluminum chloride?

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Exam 7: Chemical Reactions and Quantities

What is the molar mass of sodium phosphate,

When 60.0 g of reacts with excess the actual yield of is 112 g. What is the percent yield?

For the question(s)that follow, consider the following equation. -How many grams of are needed to produce 150 g of

In an oxidation-reduction reaction, the substance oxidized always

How many moles of are in 15.0 g of

For the question(s)that follow, consider the following equation. -When 2 moles of are allowed to react, how many moles of also react?

Find the mass of that is produced when 10.0 grams of react with 10.0 g of HCl according to the following equation.

When 85.0 g of are mixed with 160 g of the limiting reactant is

How many atoms of neon are present in 1.30 moles of neon?

4.00 moles of sodium have a mass of

1.25 moles of have a mass of

What is the classification for this balanced reaction?

For the reaction: how many kcal are needed to react

What is the molar mass of NaBr?

Barium chloride and sodium sulfate react according to the following equation. Answer the question(s)that follow about this reaction. -How many moles of barium sulfate are produced from 0.100 mole of barium chloride?

In the following reaction, when the equation is correctly balanced, what is the correct coefficient for aluminum chloride?

Chemistry in Our Lives

Chemistry and Measurements

Matter and Energy

Atoms and Elements

Nuclear Chemistry

Ionic and Molecular Compounds

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

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