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Chemistry, Chapter 12, Stoichiometry, Post Assessment

Authored by Marissa Powell

Chemistry

9th Grade - University

NGSS covered

Used 33+ times

Chemistry, Chapter 12, Stoichiometry, Post Assessment
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20 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

2.

MULTIPLE CHOICE QUESTION

2 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

2 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

2 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

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is a Limiting Reagent?

speeds up a reaction
what you run out of first
what you have left over
slows down a reaction

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