How much water should be added to 15g of salt to obtain 15% of salt solution.
Answers
Answered by
2
100
because
s w
15g.....x
15%.....
85 g of water
because
s w
15g.....x
15%.....
85 g of water
prachi388:
give full solution
write or wrong
don't know
full solution plz
think it will be 100 % mixture, 15g and 85 g i let 85g because final mixture is 15%
Answered by
7
The mass by mass percentage of a solution is given by the following relation
where mass of solution = mass of solute + mass of solution
Here, mass of the solute (i.e. salt) = 15 g and the required concentration of the solution is 15 %.
Let the mass of water be a grams.
So,
15 = [15 / (15 + a)] X 100
Solving for a, we get
a = (100 - 15)g = 85 g
where mass of solution = mass of solute + mass of solution
Here, mass of the solute (i.e. salt) = 15 g and the required concentration of the solution is 15 %.
Let the mass of water be a grams.
So,
15 = [15 / (15 + a)] X 100
Solving for a, we get
a = (100 - 15)g = 85 g
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