Question

20g salt is dissolved in water to prepare 20% (w/w) aqueous salt solution. calcuate the amount of salt added to this solution to make the final operation 30 (w/w)​

Answer 1

Answer:

180g

Explanation:

hope this helped you.

Answer 2

Answer:

30(w/w),means 30g in 70g of solution.Therefore to make solution of 30 mass percentage 10g should be added to20mass percent solution.