Answer:
1. 19.6 g
2. 5.71 moles
3. 11.1 moles
Explanation:
In order to convert the moles to grams, either the grams to moles we need the molar mass of the compounds:
Let's make the conversions:
1. 0.2 mol . 98g / 1 mol = 19.6 g
2. 102.8 g . 1 mol / 18 g = 5.71 moles
3. 200 g . 1 mol / 18 g = 11.1 moles