Question 1

One mole of copper(II) sulfate,CuSO4 ,contains ________ moles of O.

Accepted Answer

A)  4
B)  6.02 × 1023
C)  1.51 × 1023
D)  2.41 × 1023
E)  2.41 × 1024F) All of the above
G) A) and D)

Question 2

0.400 mole of sucrose, C12H22O11
 ,contains ________ C atoms.

Accepted Answer

A)  12
B)  6.02 × 1023
C)  5.02 × 1022
D)  2.89 × 1024
E)  4.80F) B) and D)
G) B) and E)

Question 3

Avogadro's number is the number of grams in a mole.

Accepted Answer

A) True 
 B)False

Question 4

What is the molar mass of copper(II) sulfate,CuSO4 ?

Accepted Answer

A)  16.00 g/mole
B)  63.60 g/mole
C)  111.6 g/mole
D)  159.6 g/mole
E)  319.2 g/moleF) A) and B)
G) B) and D)

Question 5

Which of the following is an oxidation-reduction reaction?

Accepted Answer

A)  CaCl2 + Na2SO4 → CaSO4 + 2NaCl
B)  KOH + HNO3 →  H2O + KNO3 
C)   N2 + O2 → 2NO
D)   AgNO3 + NaCl → AgCl + NaNO3 
E)   Al2(SO4) 3 + 6KOH → 2Al(OH) 3 + 3K2SO4 F) D) and E)
G) All of the above

Question 6

The moles of NH3 in 55.5 g of NH3 is ________.

Accepted Answer

The answer of The moles of NH3 in 55.5 g...

Question 7

For the following question(s) ,consider the following equation.
2Mg + O2 → 2MgO
-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 molesF) B) and D)
G) None of the above

Question 8

The molar mass of chlorine gas is 35.45 g/mole.

Accepted Answer

A) True 
 B)False

Question 9

Barium chloride and sodium sulfate react according to the following equation.
BaCl2 + Na2SO4 → BaSO4 + 2NaCl 
Answer the following question(s) about this reaction.
-How many grams of barium chloride are needed to make 100.grams of barium sulfate?

Accepted Answer

A)  44.9 g
B)  89.2 g
C)  208 g
D)  233 g
E)  46.6 gF) D) and E)
G) B) and C)

Question 10

In an oxidation-reduction reaction,the substance oxidized always ________.

Accepted Answer

A)  takes on oxygen atoms
B)  loses electrons
C)  gives up hydrogen atoms
D)  gains electrons
E)  becomes a charged speciesF) A) and E)
G) A) and D)

Question 11

Pentane (  C5H12 ) reacts with oxygen ( O2 ) to form carbon dioxide ( CO2 ) and water ( H2O) according to the following reaction.Answer the following question(s) about this reaction. C5H12 + ?O2  → ?CO2 + ?H2O
-In this reaction,what is the coefficient for calcium oxide? CaO + CO2 → CaCO3

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) All of the above
G) A) and E)

Question 12

4.00 moles of sodium have a mass of ________.

Accepted Answer

A)  4.60 g
B)  11.0 g
C)  23.0 g
D)  44.0 g
E)  92.0 gF) A) and B)
G) None of the above

Question 13

The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction? 2C + O2 → 2CO

Accepted Answer

A)  single replacement
B)  double replacement
C)  combination
D)  catalytic
E)  endothermicF) C) and D)
G) A) and C)

Question 14

In an oxidation-reduction reaction,the substance reduced always ________.

Accepted Answer

A)  takes on oxygen atoms
B)  loses electrons
C)  gives up hydrogen atoms
D)  gains electrons
E)  becomes a charged speciesF) A) and D)
G) A) and B)

Question 15

For the following question(s) ,consider the following balanced equation. Mg3N2 + 6H2O → 3Mg(OH) 2 + 2NH3 
-When 2 moles of Mg3N2 are allowed to react,how many moles of H2O also react?

Accepted Answer

A)  1 mole
B)  4 moles
C)  6 moles
D)  8 moles
E)  12 molesF) None of the above
G) A) and B)

Question 16

One mole of particles of any substance contains how many particles?

Accepted Answer

A)   106  particles
B)  3 × 10-10 particles
C)  3 × 1010 particles
D)  6.02 × 1023 particles
E)  6.02 × 10 - 23 particlesF) B) and E)
G) D) and E)

Question 17

Pentane (  C5H12 ) reacts with oxygen ( O2 ) to form carbon dioxide ( CO2 ) and water ( H2O) according to the following reaction.Answer the following question(s) about this reaction. C5H12 + ?O2  → ?CO2 + ?H2O
-What is the coefficient for water in the balanced equation?

Accepted Answer

A)  2
B)  4
C)  5
D)  6
E)  8F) B) and E)
G) None of the above

Question 18

In the following reaction Al is oxidized.
2Al + 3  → 2

Accepted Answer

A) True 
 B)False

Question 19

The following reaction is endothermic.
2   + 5  → 4C  +  O + 310 kcal

Accepted Answer

A) True 
 B)False

Question 20

For the following question(s) ,consider the following balanced equation.  Mg3N2+ 6H2O → 3Mg(OH) 2 + 2NH3 
-How many grams of H2O are needed to produce 150 g of Mg(OH) 2 ?

Accepted Answer

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

Exam 7: Chemical Quantities and Reactions

Which of the following is an oxidation-reduction reaction?

Correct Answer
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One mole of copper(II) sulfate,CuSO₄ ,contains ________ moles of O.

Correct Answer
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One mole of particles of any substance contains how many particles?

Correct Answer
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Pentane ( C₅H₁₂ ) reacts with oxygen ( O₂ ) to form carbon dioxide ( CO₂ ) and water ( H₂O) according to the following reaction.Answer the following question(s) about this reaction. C₅H₁₂ + ?O₂ → ?CO₂ + ?H₂O -What is the coefficient for water in the balanced equation?

Correct Answer
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The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction? 2C + O₂ → 2CO

Correct Answer
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Barium chloride and sodium sulfate react according to the following equation. BaCl2 + Na2SO4 → BaSO4 + 2NaCl Answer the following question(s) about this reaction. -How many grams of barium chloride are needed to make 100.grams of barium sulfate?

Correct Answer
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The moles of NH3 in 55.5 g of NH3 is ________.

Correct Answer
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The molar mass of chlorine gas is 35.45 g/mole.

Correct Answer
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In an oxidation-reduction reaction,the substance reduced always ________.

Correct Answer
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In an oxidation-reduction reaction,the substance oxidized always ________.

Correct Answer
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What is the molar mass of copper(II) sulfate,CuSO₄ ?

Correct Answer
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The following reaction is endothermic. 2 + 5 → 4C + O + 310 kcal

Correct Answer
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In the following reaction Al is oxidized. 2Al + 3 → 2

Correct Answer
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Avogadro's number is the number of grams in a mole.

Correct Answer
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0.400 mole of sucrose, C₁₂H₂₂O₁₁ ,contains ________ C atoms.

Correct Answer
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For the following question(s) ,consider the following equation. 2Mg + O₂ → 2MgO -The number of moles of oxygen gas needed to react with 4.0 moles of Mg is ________.

Correct Answer
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For the following question(s) ,consider the following balanced equation. Mg₃N₂+ 6H₂O → 3Mg(OH) ₂ + 2NH₃ -How many grams of H₂O are needed to produce 150 g of Mg(OH) ₂ ?

Correct Answer
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For the following question(s) ,consider the following balanced equation. Mg₃N₂ + 6H₂O → 3Mg(OH) ₂ + 2NH₃ -When 2 moles of Mg₃N₂ are allowed to react,how many moles of H₂O also react?

Correct Answer
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Correct Answer
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4.00 moles of sodium have a mass of ________.

Correct Answer
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Exam 7: Chemical Quantities and Reactions

Which of the following is an oxidation-reduction reaction?

Correct AnswerverifiedShow Answer

One mole of copper(II) sulfate,CuSO4 ,contains ________ moles of O.

Correct AnswerverifiedShow Answer

One mole of particles of any substance contains how many particles?

Correct AnswerverifiedShow Answer

Pentane ( C5H12 ) reacts with oxygen ( O2 ) to form carbon dioxide ( CO2 ) and water ( H2O) according to the following reaction.Answer the following question(s) about this reaction. C5H12 + ?O2 → ?CO2 + ?H2O -What is the coefficient for water in the balanced equation?

Correct AnswerverifiedShow Answer

The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction? 2C + O2 → 2CO

Correct AnswerverifiedShow Answer

Barium chloride and sodium sulfate react according to the following equation. BaCl2 + Na2SO4 → BaSO4 + 2NaCl Answer the following question(s) about this reaction. -How many grams of barium chloride are needed to make 100.grams of barium sulfate?

Correct AnswerverifiedShow Answer

The moles of NH3 in 55.5 g of NH3 is ________.

Correct AnswerverifiedShow Answer

The molar mass of chlorine gas is 35.45 g/mole.

Correct AnswerverifiedShow Answer

In an oxidation-reduction reaction,the substance reduced always ________.

Correct AnswerverifiedShow Answer

In an oxidation-reduction reaction,the substance oxidized always ________.

Correct AnswerverifiedShow Answer

What is the molar mass of copper(II) sulfate,CuSO4 ?

Correct AnswerverifiedShow Answer

The following reaction is endothermic. 2 + 5 → 4C + O + 310 kcal

Correct AnswerverifiedShow Answer

In the following reaction Al is oxidized. 2Al + 3 → 2

Correct AnswerverifiedShow Answer

Avogadro's number is the number of grams in a mole.

Correct AnswerverifiedShow Answer

0.400 mole of sucrose, C12H22O11 ,contains ________ C atoms.

Correct AnswerverifiedShow Answer

For the following question(s) ,consider the following equation. 2Mg + O2 → 2MgO -The number of moles of oxygen gas needed to react with 4.0 moles of Mg is ________.

Correct AnswerverifiedShow Answer

For the following question(s) ,consider the following balanced equation. Mg3N2+ 6H2O → 3Mg(OH) 2 + 2NH3 -How many grams of H2O are needed to produce 150 g of Mg(OH) 2 ?

Correct AnswerverifiedShow Answer

For the following question(s) ,consider the following balanced equation. Mg3N2 + 6H2O → 3Mg(OH) 2 + 2NH3 -When 2 moles of Mg3N2 are allowed to react,how many moles of H2O also react?

Correct AnswerverifiedShow Answer

Pentane ( C5H12 ) reacts with oxygen ( O2 ) to form carbon dioxide ( CO2 ) and water ( H2O) according to the following reaction.Answer the following question(s) about this reaction. C5H12 + ?O2 → ?CO2 + ?H2O -In this reaction,what is the coefficient for calcium oxide? CaO + CO2 → CaCO3

Correct AnswerverifiedShow Answer

4.00 moles of sodium have a mass of ________.

Correct AnswerverifiedShow Answer

Correct Answer
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One mole of copper(II) sulfate,CuSO₄ ,contains ________ moles of O.

Correct Answer
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Correct Answer
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Pentane ( C₅H₁₂ ) reacts with oxygen ( O₂ ) to form carbon dioxide ( CO₂ ) and water ( H₂O) according to the following reaction.Answer the following question(s) about this reaction. C₅H₁₂ + ?O₂ → ?CO₂ + ?H₂O -What is the coefficient for water in the balanced equation?

Correct Answer
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The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction? 2C + O₂ → 2CO

Correct Answer
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What is the molar mass of copper(II) sulfate,CuSO₄ ?

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0.400 mole of sucrose, C₁₂H₂₂O₁₁ ,contains ________ C atoms.

Correct Answer
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For the following question(s) ,consider the following equation. 2Mg + O₂ → 2MgO -The number of moles of oxygen gas needed to react with 4.0 moles of Mg is ________.

Correct Answer
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For the following question(s) ,consider the following balanced equation. Mg₃N₂+ 6H₂O → 3Mg(OH) ₂ + 2NH₃ -How many grams of H₂O are needed to produce 150 g of Mg(OH) ₂ ?

Correct Answer
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For the following question(s) ,consider the following balanced equation. Mg₃N₂ + 6H₂O → 3Mg(OH) ₂ + 2NH₃ -When 2 moles of Mg₃N₂ are allowed to react,how many moles of H₂O also react?

Correct Answer
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