Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
Science
/
Chemistry
/
Percent Composition
Worksheet
Grade Level
Chemistry
11.32 Percent Composition
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
Pure ammonium sulfate is calculated to be 21.2% nitrogen by mass, but a student sample tests at 18.0% nitrogen. Which interpretation is most reasonable?
A
The formula of pure ammonium sulfate changes with sample size.
B
The sample may contain impurity or retained moisture that adds mass without adding nitrogen.
C
The nitrogen atoms became heavier during the measurement.
D
A coefficient in a balanced equation changed the compound composition.
Submit Answer
