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

Note: Reference the Fundamental constants table for additional information.

Part 1 of 3
Be sure your answer has the correct number of significant figures.
6.4x10^23

1 mole of ammonia contains 6.022 x 10^23 molecules, according to Avogadro's constant. Therefore, 6.4 x 10^23 molecules of ammonia is equal to 1.06 moles (6.4 x 10^23 / 6.022 x 10^23 = 1.06) of ammonia.

Therefore, 6.4 x 10^23 molecules of ammonia is equal to approximately 1.06 moles.