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Stoichiometry

Authored by m m

Chemistry

10th - 12th Grade

NGSS covered

Stoichiometry
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 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

30 sec • 1 pt

 The equation for Percent Yield:

(predicted/experimental) X 100
(experimental/predicted) X 100
(experimental - predicted)/ Predicted X 100

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2H2  +   O2  →  2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?

2
4
6
8

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a Excess Reagent?

amount you end with
what you run out of first
what you have left over
what you start with

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you predicted that 1.5 moles of Magnessium are used in a reaction, and you have 2.0 moles of Magnessium, what type of reactant is Magnessium?

Limiting Reactant
Excess Reactant
Fast Reacter
Non-Reactant

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you predicted that 1.5 moles of Magnesium are used in a reaction, and you have 1.0 mole of Magnesium, how much Magnesium is in Excess?

0.5 moles Mg
1.5 moles Mg
1.0 mole Mg
0.0 Moles Mg

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

theoretical yield
mole ratio
actual yield
percentage yield

Tags

NGSS.HS-PS1-7

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