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Stoichiometry

Authored by Stephanie Bonat

Science

10th Grade

NGSS covered

Used 5+ times

Stoichiometry
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35 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from  6 moles H2

4 moles Fe
6 moles Fe
9 moles Fe
2 moles Fe

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

N2 +  3H2 → 2NH3 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

6 mol H

2 mol H

3 mol H

1 mol H

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, they are calculating the:

theoretical yield.

mole ratio.

actual yield.

percentage yield.

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the measured amount of a product obtained from a chemical reaction?

mole ratio
theoretical yield
percentage yield
actual yield

5.

MULTIPLE CHOICE QUESTION

2 mins • 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

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form MgCl2.
 
Mg +  2HCl --> MgCl2  +  H2   
 

Mg
H2
MgCl2
HCl

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the formula for percent yield?

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