Calculate the mass of sodium sulfate required to prepare it's 20% solution in 100g of water
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the mass of sodium sulfate required to prepare it's 20% solution in 100g of water is calculated as follows:
mass percentage = mass of solute / mass of solution ]*100
20% = mass of sodium sulfate /100 g]*100
Mass of sodium sulfate = 20*100/100
= 20 g
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Let mass of solute = x
Then solvent = 100g
20 = x/x+100×100
20/100 = x/x+100
1/5 = x/x+100
5x = x+100
4x = 100
x = 25 g
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