 Mole Ratios & Mole to Mole Calculations
9 months ago
john_boren_31436
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• Question 1
30 seconds
Q.

What is a mole ratio?

An animal that burrows underground.

How many moles of reactant are used up in a chemical reaction.

The ratio of a reactant / product to a different one - compared by the number of particles.

The process by which we multiply fractions by using numbers from a chemistry problem.

• Question 2
30 seconds
Q.

Where are the numbers for a mole ratio found?

They are part of the chemical formulas for the reactants / products.

They are given in the problem.

They are found on the periodic table for those elements.

They are found as coefficients in the reaction's balanced chemical equation.

• Question 3
30 seconds
Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

Ethane (C2H6) combusts in the above reaction. What is the mole ratio of ethane to oxygen gas?    • Question 4
30 seconds
Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

Ethane (C2H6) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?    • Question 5
30 seconds
Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

A problem asks how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6). What is the first step in setting up the problem?    • Question 6
30 seconds Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

A problem asks how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6). What is the second step in setting up the problem?    • Question 7
30 seconds Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

A problem asks how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6). What is the final answer for this problem?

13 mol C2H6

3 mol O2

21 mol O2

42 mol O2

• Question 8
120 seconds
Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

New problem: If 16 moles of carbon dioxide are formed by this reaction, how many moles of water were also produced?

4 mol H2O

6 mol H2O

24 mol H2O

96 mol H2O

384 mol H2O

• Question 9
120 seconds
Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

New problem: If 3.5 moles of oxygen gas are used up as ethane combusts completely, how many moles of carbon dioxide are produced?

0.5 mol CO2

0.57 mol CO2

2.0 mol CO2

3.0 mol CO2

3.5 mol CO2

• Question 10
120 seconds
Q.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

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

4.5 mol C2H6

27 mol C2H6

40.5 mol C2H6

81 mol C2H6

162 mol C2H6

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