Question

1.
Detesmine the mass
by mass percentage concentration of a 100g salt solution which contains 20g salt ? ​

Answer 1

Answer:

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%