Question

a salt solution of 500g is made by dissolving 25g of common salt in water. calculate the concentration in terms of mass by mass percentage of solution

Answer 1

Answer:

Solution

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Correct option is B)

Solution:- (B) 20%

As we know that,

mass by mass percent=

Total wt. of salt

Wt. of salt

×100

Given that:-

Weight of salt = 20 g

Total weight of salt = 100 g

∴ mass by mass percent=

100

20

×100=20%