4
QuizMultiple Choice

Stoichiometric Calculations

Question 4 • LA-Chemistry A

Lakshmi has a sample of ammonium nitrate (NH4NO3) that has a mass of 40.10 g. She knows that the molar mass of NH4NO3 is 80.0432 g/mol. To the correct number of significant digits, how many moles of NH4NO3 does the sample contain?

Answer
A
0.50 moles
B
0.500979 moles
C
0.500980 moles
D
0.5010 moles
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