percent composition
Authored by D'Anne Cribb
Chemistry
10th - 11th Grade
NGSS covered
Used 98+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of oxygen in MgO?
20%
40%
50%
60%
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of magnesium in MgO?
20%
40%
50%
60%
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of fluorine in CaF2 (gram-formula mass = 78 g/mol)?
24%
49%
51%
65%
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of calcium in CaF2 (gram-formula mass = 78 g/mol)?
24%
49%
51%
65%
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?
20%
27%
46%
53%
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent composition by mass of magnesium in the compound MgSO4 (gram formula mass = 120 g/mol)?
20%
27%
46%
53%
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent composition by mass of oxygen in the compound MgSO4 (gram formula mass = 120 g/mol)?
20%
27%
46%
53%
Tags
NGSS.HS-PS1-7
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