AP Chemistry : Stoichiometry

Study concepts, example questions & explanations for AP Chemistry

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Example Questions

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Example Question #9 : Unit Conversions

A  sample of an unknown substance occupies a volume of . Find the density in .

Possible Answers:

Correct answer:

Explanation:

Remember: 

Therefore to find density we must divide the given mass by the given volume.

However, we must remember our significant figure rules. In this case both the given values have 4 significant figures. So, our answer can only have 4 significant figures. Therefore after rounding the correct answer is .

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