Quiz about Mole to Mole and Mass to Mass Stoichiometry

Question 1

How many moles of water can be produced if 6.5 moles H₂ are used?

Accepted Answer

6.5 moles

Answer

4 moles

Answer

16 moles

Answer

2 moles

Question 2

Given the reaction: 4Al + 3O₂ --> 2Al₂O₃

How many moles of Aluminum oxide, Al₂O₃, can you produce if you have 2 moles of Al?

Accepted Answer

1 mole

Answer

3 mole

Answer

2 mole

Answer

0.5 mole

Question 3

How many moles of ethane (C₂H₆) are required to produce 13.5 moles of water from the above reaction?

Accepted Answer

4.5 mol C₂H₆

Answer

27 mol C₂H₆

Answer

40.5 mol C₂H₆

Answer

81 mol C₂H₆

Question 4

What is the molar mass of NaOH?

Accepted Answer

40 g/mole

Answer

368 g/mole

Answer

57 g/mole

Question 5

How many moles of S₈ is needed to produce 12 moles of SO₃?

Accepted Answer

1.5

Answer

1

Answer

2

Answer

12

Question 6

How many moles of KCl is produced when 6.75 moles of O₂ is also produced?

Accepted Answer

4.5

Answer

2

Answer

3.5

Answer

6.75

Question 7

CaCl₂ + 2Na --> 2NaCl + Ca With 2.2 moles of CaCl2, how much Ca can be produced? and how much NaCl can be produced?

Accepted Answer

2.2 Ca and 4.4 NaCl

Answer

8 Ca and .2 NaCl

Answer

4.8 Ca and NaCl

Answer

2 Ca and 9 NaCl

Question 8

4Al + 3O₂ --> 2Al₂O₃

_{If I have 8 moles of}Al_{and 5 moles of}O₂ _{, which one will be my limiting reactant in making}2Al₂O₃

Accepted Answer

O2

Answer

Al

Answer

Al2O3

Answer

no limiting reactant

Question 9

What is the first thing you must do to solve a stoichiometry problem?

Accepted Answer

Ratio

Answer

write down all substances

Answer

add all together

Answer

adjust the mole amounts

Question 10

Knowing the mole ratio of a reactant and product in a chemical reaction would allow you to determine:

Accepted Answer

the mass of the product produced from a known mass of reactant.

Answer

the energy released in the reaction.

Answer

the speed of the reaction.

Answer

whether the reaction is reversible.

Question 11

What is the mole ratio of H2O to H3PO4 in the following chemical equation?

Accepted Answer

3 to 2

Answer

1 to 6

Answer

4 to 6

Answer

2 to 3

Question 12

In the equation $$Al_2\left(SO_4\right)3+3Ca\left(OH\right)_2\ \rightarrow\ 3CaSO_4\ +2Al\left(OH\right)_3$$ , , the mole ratio of calcium hydroxide to aluminum hydroxide is:

Accepted Answer

3 : 2

Answer

1 : 3

Answer

2 : 3

Answer

1 : 1

Question 13

For the reaction represented by the equation N_2+3H_{2 ightarrow ext{2NH}_3}, how many moles of nitrogen (N2) are required to produce 18 grams of ammonia (NH3)?

Accepted Answer

0.53 mol

Answer

0.9 mol

Answer

18 grams

Answer

36 grams

Question 14

For the reaction represented by the equation Pb\left(NO_3\right)_2+2KI\ \rightarrow\ PbI_2+2KNO_3 how many moles of lead iodide PbI_2 are produced of 300 grams potassium iodide KI when Pb\left(NO_3\right)_2 is in excess?

Accepted Answer

0.904 mol PbI₂

Answer

114.78 mol PbI₂

Answer

0.904 grams PbI₂

Answer

114.78 grams PbI₂

Question 15

For the reaction represented by the equation $$2KClO_3\rightarrow\ 2KCI+30_2$$ how many grams of potassium chlorate are required to produce 160. g of oxygen?

Accepted Answer

804 g KClO₃

Answer

408 g KClO₃

Answer

598 g KClO₃

Answer

There is not enough information.

Question 16

For the reaction pictured how many moles of nitrogen gas (N2) are required to produce 18 mol of ammonia (NH3)?

Accepted Answer

9.0

Answer

18

Answer

4.5

Answer

36

Question 17

What mass of NaCl can be produced from 0.75 mol of chlorine gas (Cl2)?

Accepted Answer

88 g

Answer

0.75 g

Answer

1.5 g

Answer

44 g

Question 18

In the reaction @@ ext{C}_3 ext{H}_8 + 5 ext{O}_2 ightarrow 3 ext{CO}_2 + 4 ext{H}_2 ext{O}@@, how many moles of water are produced from 2 moles of propane (C_3H_8)?

Accepted Answer

8 moles

Answer

4 moles

Answer

6 moles

Answer

10 moles

Question 19

Given the reaction @@2 ext{H}_2 + ext{O}_2 ightarrow 2 ext{H}_2 ext{O}@@, how many grams of water are produced from 4 grams of hydrogen gas? (Molar mass of H_2 = 2 g/mol, H_2O = 18 g/mol)

Accepted Answer

36 grams

Answer

72 grams

Answer

18 grams

Answer

9 grams

Question 20

In the reaction @@ ext{N}_2 + 3 ext{H}_2 ightarrow 2 ext{NH}_3@@, if you start with 6 moles of hydrogen, how many moles of ammonia (NH_3) can be produced?

Accepted Answer

4 moles

Answer

2 moles

Answer

3 moles

Answer

6 moles

Question 21

For the reaction @@ ext{Fe}_2 ext{O}_3 + 3 ext{CO} ightarrow 2 ext{Fe} + 3 ext{CO}_2@@, how many moles of carbon monoxide (CO) are needed to react completely with 1 mole of iron(III) oxide (Fe_2O_3)?

Accepted Answer

3 moles

Answer

1 mole

Answer

2 moles

Answer

6 moles

Mole to Mole and Mass to Mass Stoichiometry

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