Question

1. calculate the masses of cane sugar and water required to prepare 200 grams of 15% mass by mass solution of cane sugar and water.

2. it is desired to prepare 500 grams of 10%mass by mass percentage of urea in water. how much urea should be dissolved in how much volume of water? density of water is 1gm/l

Answer 1

Sorry I know 1 not the second
1- grams