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Stoichiometry

Authored by Charles Martinez

Chemistry

11th Grade

NGSS covered

Used 1+ times

Stoichiometry
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27 questions

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1.

MULTIPLE CHOICE QUESTION

2 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
Ask for help

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

KNO3 --> KNO2 + O2
What coefficients are needed to balance the reaction?

2, 2, 1
2, 3, 2
1, 2, 2
1, 3, 1

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

O2 + CS2 --> CO2 + SO2
What coefficient would go in front of the O2?

1
2
3
4

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The equation for Percent Yield:

(predicted/experimental) X 100

(actual or experimental/theoretical or predicted) X 100

(experimental - predicted)/ Predicted X 100

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

True or False. You must convert grams to moles to do stoichiometry.

True
False

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

2H2   +   O2  →  2H2O
How many moles of water can be produced if 8 moles H2 are used?

4 moles
8 moles
16 moles
2 moles

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of Mg to moles Fe?

3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol Fe

Tags

NGSS.HS-PS1-7

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