Answer:
- 5.39×10⁻⁷ moles of Mg²⁺ ions
- 5.63×10²³ molecules of NH₃
Explanation:
We start from a statement that says:
1 mol of anything contains 6.02×10²³ particles
- Therefore we can say that 1 mol of Mg²⁺ ions has 6.02×10²³ Mg²⁺ ions.
3.247×10¹⁷ ions . 1 mol / 6.02×10²³ ions = 5.39×10⁻⁷ moles of Mg²⁺ ions
- 1 mol of ammonia contains 6.02×10²³ molecules
Therefore 0.935 moles of ammonia will contain (0.935 . 6.02×10²³ ) / 1 =
5.63×10²³ molecules of NH₃
