How many moles of ammonia contain each of the following number of molecules?

Question

Note: Reference the Fundamental constants table for additional information.
Be sure your answer has the correct number of significant figures.

3.84x10^26 molecules

Answer 1

Convert the number of molecules to moles using Avogadro's number, which is 6.022 x 10^23 molecules/mol.

3.84 x 10^26 molecules / (6.022 x 10^23 molecules/mol) = 63.9 moles

Therefore, 3.84 x 10^26 molecules of ammonia contain 63.9 moles.