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Practice Quiz #3 Stoichiometry, Limiting Reactants & % Yield

Authored by Dominie Dew

Chemistry

10th - 12th Grade

NGSS covered

Used 4+ times

Practice Quiz #3 Stoichiometry, Limiting Reactants & % Yield
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18 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the limiting reactant if 16 moles of NH3 and 30.0 moles of NO are combined?

4NH3 + 6NO --> 5N2 + 6H2O

NH3

NO

N2

water

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Use the equation 2 Al + 3 Cl2 ---> 2 AlCl3. If 2 moles of aluminum and 2 moles of chlorine are combined, identify the limiting reactant.

AlCl3

Cl2

Al

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Fe + S --> FeS

If 7.62g Fe and 8.67g S are combined, what is the limiting reactant?

Fe

S

FeS

none

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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

Write a Balanced Equation
Panic
Write an Unbalanced Equation
Avogadro's Number

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

When does a chemical reaction stop?

When the lab is finished
When the excess reactant is used up
When the limiting reactant is used up
Chemical reactions never stop

Tags

NGSS.HS-PS1-6

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the mole ratio of H2O to H3PO4 in the following chemical equation?   P4O10 + 6 H2O --> 4 H3PO

6:4
4:6
1:3
3:1

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

SO2 + PCl5 --> SOCl2 + POCl3

How much SOCl2 is produced when 16.2g SO2 are combined with 13.7g PCl5?

7.87g

30.1g

26.4g

19.8g

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