CHEM 140 (CHEM140)
Eastern Washington University
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CHEM 140 AP Unit 1 Progress/Unit 1 Progress Check: MCQ Study Guide
- Exam (elaborations) • 14 pages • 2023
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Which of the following numerical expressions gives the number of moles in of ? 
A 
B 
C 
D 
2. In a lab a student is given a sample of pure metal. Which of the following pieces of information is 
most useful for determining the number of atoms in the sample? Assume that the pressure and 
temperature in the lab are and . 
A 
The molar mass of 
B 
The density of at 
C 
The volume of the sample 
D 
The ratio of the two main isotopes found in pure 
3. A sample of which of the following compounds has...
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