Question

how much water should be mixed with 10 ml of alcohal so as to obtain 5 % of solution

Answer 1

Answer:

Given volume= 10ml

Given concentration= 5%=5/100

Explanation: concentration of solution = volume of solute/ volume of solution

5/100 = 10/10+x

100/5=10+x/10

100/5×10= 10+x

1000/5=10+x

200=10+x

200-10=x

X=190ml