Percent Comp and Empirical Formula Test
Authored by Yaounde Tanner
Science
11th Grade
NGSS covered
Used 5+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A formula with the lowest whole # ratio of elements in a compound is called
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of the following is NOT needed to calculate percent composition?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An empirical formula:
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of fluorine in CaF2 (gram-formula mass = 78 g/mol)?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element has an abundance of 39.03% in the compound sodium phosphate, Na3PO4
Na
P
O
None of the above
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the percent composition on Oxygen in NO2? (rounded)
7.
OPEN ENDED QUESTION
2 mins • 1 pt
What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?
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