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Mole Ratios

Authored by Lesli Wertin

Chemistry

10th - 12th Grade

NGSS covered

Used 229+ times

Mole Ratios
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12 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen?

10:6 
3:4
4:3
2:3

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can be determined from a balanced chemical equation?

Mole ratio of any two substances in the reaction
Energy released in the reaction.
Electron configuration of all elements in the reaction. 
Mechanism involved in the reaction. 

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

N2 +  3H2 → 2NH3 
What is the mole ratio between Nitrogen and Ammonium in the above reaction?

1 moles NH3 / 2 moles N2 
2 moles NH3 / 1 moles N2 
2 moles N2 / 3 moles NH3 
1 moles N2 / 3 moles NH3 

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

4NH+ 5O2-->4NO + 6H2O
What is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?

15
18
20
24

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

H2+Cl2-->2HCl
How many moles of Cl2 are needed to react with 3 moles of H2?

5
2
3
6

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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.

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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.

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