Asked by Bryan

What is the % by mass of 2.5 of salt is dissolve in 250g of water?
Answered by Writeacher
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Answered by MathMate
mass percent is number of grams of solute dissolved in 100 g of <i>solvent</i>.

2.5 g of salt dissolved in 250 g of water.
So
1 g of salt dissolved in 100 g of water (solvent)
=>
so mass percent = 1%
Answered by DrBob222
Mass percent = (mass solute/mass solution)*100 = ?
mass solute = 2.50 grams
mass solution = 250 g solvent + 2.50 g salt = 252.5 g solution.
Then % m/m = (2.50/252.5)*100 = 0.99
Answered by MathMate
I agree with DrBob222's solution.
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