Question 1

For the question(s) that follow, consider the following balanced equation.
Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH)₂(s) + 2NHS1U1B13S1U1B0(g)
-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 moles

Question 2

For the question(s) that follow, consider the following balanced equation.
Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH)₂(s) + 2NHS1U1B13S1U1B0(g)
-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 g

Question 3

Pentane (CS1U1B15S1U1B0HS1U1B112S1U1B0) reacts with oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O) according to the following reaction. Answer the question(s) that follow about this reaction.
CS1U1B15S1U1B0HS1U1B112S1U1B0 + ? O₂ → ? CO₂ + ? H₂O
-What is the coefficient for carbon dioxide in the balanced equation?

Accepted Answer

A)  2 
B)  4 
C)  5 
D)  6 
E)  8

Question 4

For the question(s) that follow, consider the following balanced equation.
Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH)₂(s) + 2NHS1U1B13S1U1B0(g)
-How many grams of CO₂ are produced from 125 g of O₂ and excess CH4? 
CH4 + 2O₂ → CO₂ + 2H₂O

Accepted Answer

A)  125 g of CO₂ 
B)  62.5 g of CO₂ 
C)  172 g of CO₂ 
D)  85.9 g of CO₂ 
E)  250. g of CO₂

Question 5

For the reaction: 2H₂O(l) + 137 kcal → 2H₂ (g) + O₂ (g) how many kcal are needed to form 2.00 moles O₂ (g)?

Accepted Answer

A)  68.5 kcal 
B)  137 kcal 
C)  274 kcal 
D)  190. kcal 
E)  548 kcal

Question 6

For the question(s) that follow, consider the following equation.
2Mg + O₂ → 2MgO
-How many moles of magnesium are needed to react with 0.50 mole of O₂?

Accepted Answer

A)  0.50 mole 
B)  1.0 moles 
C)  2.0 moles 
D)  3.0 moles 
E)  4.0 moles

Question 7

For the question(s) that follow, consider the following balanced equation.
Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH)₂(s) + 2NHS1U1B13S1U1B0(g)
-What is the correct form of the conversion factor needed to convert the number of moles of H?O to the number of moles of NH3 produced?

Accepted Answer

A)  $\frac { 2 \text { moles of } \mathrm { NH } _ { 3 } } { 6 \text { moles of } \mathrm { H } _ { 2 } \mathrm { O } }$ 
B)  $\frac { 6 \text { moles of } \mathrm { H } _ { 2 } \mathrm { O } } { 2 \text { moles of } \mathrm { NH } _ { 3 } }$ 
C)  $\frac { 1 \text { mole of } \mathrm { Mg } _ { 3 } \mathrm {~N} _ { 2 } } { 6 \text { moles of } \mathrm { H } _ { 2 } \mathrm { O } }$ 
D)  $\frac { 18 g \text { of } \mathrm { H } _ { 2 } \mathrm { O } } { 1 \text { mole of } \mathrm { H } _ { 2 } \mathrm { O } }$ 
E)  $\frac { 18 g \text { of } \mathrm { H } _ { 2 }O } { 17 \mathrm {~g} \text { of } \mathrm { NH } _ { 3 } }$

Question 8

For the question(s) that follow, consider the following equation.
2Mg + O₂ → 2MgO
-When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl₂, 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

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

For the question(s) that follow, consider the following balanced equation.
Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH)₂(s) + 2NHS1U1B13S1U1B0(g)
-In the reaction of silver nitrate with sodium chloride, how many grams of silver chloride will be produced from 100. g of silver nitrate when it is mixed with an excess of sodium chloride? The equation for the reaction is below. 
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)

Accepted Answer

A)  107.9 g 
B)  169.9 g 
C)  84.4 g 
D)  0.589 g 
E)  58.9 g

Question 11

For the question(s) that follow, consider the following balanced equation.
Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH)₂(s) + 2NHS1U1B13S1U1B0(g)
-When 36.0 g of H₂O react, how many grams of NH3 are produced?

Accepted Answer

A)  34.0 g 
B)  10.0 g 
C)  5.67 g 
D)  11.3 g 
E)  102 g

Question 12

What is the molar mass of sucrose (C₁₂H₂₂O₁₁)?

Accepted Answer

A)  29.0 g 
B)  50.2 g 
C)  210 g 
D)  342 g 
E)  182 g

Question 13

Barium chloride and sodium sulfate react according to the following equation.
BaCl₂ + NaS1U1B12S1U1B0SO₄ → BaSO₄ + 2NaCl
Answer the question(s) that follow 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)  89.3 g 
C)  208.3 g 
D)  233.3 g 
E)  46.6 g

Question 14

The following is a decomposition reaction.
2KClO₃ → 2KCl + 3O₂

Accepted Answer

A) True 
 B)False

Question 15

Barium chloride and sodium sulfate react according to the following equation.
BaCl₂ + NaS1U1B12S1U1B0SO₄ → BaSO₄ + 2NaCl
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)  0.0100 mole 
B)  0.100 mole 
C)  0.200 mole 
D)  1.00 mole 
E)  2.00 moles

Question 16

In the reaction of hydrogen gas with oxygen gas to produce water, 1 mole of oxygen gas can produce 2 moles of water, given sufficient hydrogen available.

Accepted Answer

A) True 
 B)False

Question 17

In a __________ reaction, two or more elements or compounds form one product.

Accepted Answer

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

Question 18

The following reaction is balanced.
KClO₃ → KCl + O₂

Accepted Answer

A) True 
 B)False

Question 19

How many moles of K2SO₄ are in 15.0 g of K2SO₄?

Accepted Answer

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

Question 20

What type of reaction is: CH4 + 2O₂ → CO₂ + 2H₂O + 218 kcal?

Accepted Answer

A)  an endothermic reaction 
B)  an exothermic reaction 
C)  a single replacement reaction 
D)  a combination reaction 
E)  a decomposition reaction

Exam 6: Chemical Reactions and Quantities

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

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

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH₃(g) -How many grams of CO₂ are produced from 125 g of O₂ and excess CH₄? CH₄ + 2O₂ → CO₂ + 2H₂O

For the reaction: 2H₂O(l) + 137 kcal → 2H₂ (g) + O₂ (g) how many kcal are needed to form 2.00 moles O₂ (g) ?

For the question(s) that follow, consider the following equation. 2Mg + O₂ → 2MgO -How many moles of magnesium are needed to react with 0.50 mole of O₂?

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH₃(g) -What is the correct form of the conversion factor needed to convert the number of moles of H?O to the number of moles of NH₃produced?

For the question(s) that follow, consider the following equation. 2Mg + O₂ → 2MgO -When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl₂, how many moles of aluminum chloride are produced?

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

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH₃(g) -When 36.0 g of H₂O react, how many grams of NH₃ are produced?

What is the molar mass of sucrose (C₁₂H₂₂O₁₁) ?

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

The following is a decomposition reaction. 2KClO₃ → 2KCl + 3O₂

Barium chloride and sodium sulfate react according to the following equation. BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl 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 reaction of hydrogen gas with oxygen gas to produce water, 1 mole of oxygen gas can produce 2 moles of water, given sufficient hydrogen available.

In a __________ reaction, two or more elements or compounds form one product.

The following reaction is balanced. KClO₃ → KCl + O₂

How many moles of K₂SO₄ are in 15.0 g of K₂SO₄?

What type of reaction is: CH₄ + 2O₂ → CO₂ + 2H₂O + 218 kcal?

Exam 6: Chemical Reactions and Quantities

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

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

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

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH3(g) -How many grams of CO₂ are produced from 125 g of O₂ and excess CH4? CH4 + 2O₂ → CO₂ + 2H₂O

For the reaction: 2H₂O(l) + 137 kcal → 2H₂ (g) + O₂ (g) how many kcal are needed to form 2.00 moles O₂ (g) ?

For the question(s) that follow, consider the following equation. 2Mg + O₂ → 2MgO -How many moles of magnesium are needed to react with 0.50 mole of O₂?

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH3(g) -What is the correct form of the conversion factor needed to convert the number of moles of H?O to the number of moles of NH3 produced?

For the question(s) that follow, consider the following equation. 2Mg + O₂ → 2MgO -When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl₂, how many moles of aluminum chloride are produced?

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

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH3(g) -When 36.0 g of H₂O react, how many grams of NH3 are produced?

What is the molar mass of sucrose (C₁₂H₂₂O₁₁) ?

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

The following is a decomposition reaction. 2KClO₃ → 2KCl + 3O₂

Barium chloride and sodium sulfate react according to the following equation. BaCl₂ + Na2SO₄ → BaSO₄ + 2NaCl 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 reaction of hydrogen gas with oxygen gas to produce water, 1 mole of oxygen gas can produce 2 moles of water, given sufficient hydrogen available.

In a __________ reaction, two or more elements or compounds form one product.

The following reaction is balanced. KClO₃ → KCl + O₂

How many moles of K2SO₄ are in 15.0 g of K2SO₄?

What type of reaction is: CH4 + 2O₂ → CO₂ + 2H₂O + 218 kcal?

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

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

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH₃(g) -How many grams of CO₂ are produced from 125 g of O₂ and excess CH₄? CH₄ + 2O₂ → CO₂ + 2H₂O

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH₃(g) -What is the correct form of the conversion factor needed to convert the number of moles of H?O to the number of moles of NH₃produced?

For the question(s) that follow, consider the following balanced equation. Mg₃N₂(s) + 6H₂O(l) → 3Mg(OH) ₂(s) + 2NH₃(g) -When 36.0 g of H₂O react, how many grams of NH₃ are produced?

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

Barium chloride and sodium sulfate react according to the following equation. BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl Answer the question(s) that follow about this reaction. -How many moles of barium sulfate are produced from 0.100 mole of barium chloride?

How many moles of K₂SO₄ are in 15.0 g of K₂SO₄?

What type of reaction is: CH₄ + 2O₂ → CO₂ + 2H₂O + 218 kcal?