Percent Mass
Authored by Lisa Thompson
Science
12th Grade
NGSS covered
Used 2+ times
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25 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
What is the percent by mass of 5.0 g of iron (II) sulfate dissolved in 75.0 g of water?
Based on the given problem what is the amount of solution?
5g iron(II) sulfate
75g water
80g solution
6.25%
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
What is the percent by mass of 5.0 g of iron (II) sulfate dissolved in 75.0 g of water?
Based on the given problem what is the amount of solute?
5g iron(II) sulfate
75g water
80g solution
6.25%
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
What is the percent by mass of 5.0 g of iron (II) sulfate dissolved in 75.0 g of water?
Based on the given problem what is the solvent?
iron(II) sulfate
water
solution
all answers are correct
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How do we compute for percent by mass?
Tags
NGSS.MS-PS1-1
5.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
A solution is formed by adding 5 g of ammonium nitrate to 15 g of water. What is the percent by mass of ammonium nitrate?
(a)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using the student’s data, what is the correct numerical setup for calculating the percent composition by mass of water in the hydrate?
%H₂O = (2.13 g / 0.76 g) × 100
%H₂O = (2.13 g / 21.37 g) × 100
%H₂O = (0.76 g / 1.37 g) × 100
%H₂O = (0.76 g / 2.13 g) × 100
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the percent composition by mass of nitrogen in the compound N2H4 (gram-formula mass = 32 g/mol)?
13%
44%
88%
93%
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