How many moles of ammonia contain each of the following number of molecules?
Note: Reference the Fundamental constants table for additional information.
Be sure your answer has the correct number of significant figures.
7.58x10^26 molecules
7.55x10^22 molecules
4.8x10^24 molecules
1. For 7.58x10^26 molecules of ammonia, we first need to convert the number of molecules to moles using Avogadro's number.
7.58x10^26 molecules * (1 mol / 6.022x10^23 molecules) = 126.00 mol
Therefore, 7.58x10^26 molecules of ammonia contain 126.00 moles (with 4 significant figures).
2. For 7.55x10^22 molecules of ammonia:
7.55x10^22 molecules * (1 mol / 6.022x10^23 molecules) = 0.1254 mol
Therefore, 7.55x10^22 molecules of ammonia contain 0.1254 moles (with 4 significant figures).
3. For 4.8x10^24 molecules of ammonia:
4.8x10^24 molecules * (1 mol / 6.022x10^23 molecules) = 7.97 mol
Therefore, 4.8x10^24 molecules of ammonia contain 7.97 moles (with 3 significant figures).