Question

calculate the mass of salt required to prepare it's 28% solution in 100 g of water​

Answer 1

Answer:

5% (w/v), by definition, means 5 grams of solute per 100 grams of solution.

Since the density is 1.2 g/ml, you can find the volume of 100 grams of solution.

100gsolution×1.2g1ml=83.33ml.

Hence

83.33ml×100ml5g=4.17g solute needed.