Question

calculate the mass of sodium sulphate required to prepare 20 percent (mass percent) solution in 100 g of water ​

Answer 1

Answer:

mass%= mass of solute by mass of solution x100

Explanation:

20=x\100x100x=20

Answer 2

Answer:

25g

Explanation:

Let the mass of sodium sulphate required be = x g

The mass of solution would be = (x +100) g

x g of solute in (x + 100) g of solution

20% = ×/x+100 x100

20 x + 2000= 100 x

80 x = 2000

x = 2000/ 80

= 25 g

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