Question

Amount of glucose required to be dissolved in 81.0 g of
water to give 10% by mass of solution is
(a) 8.1 g
(b) 9g
(c) 10g
(d) 18 g​

Answer 1

Mass%= (Weight of solute/ Mass of Solution )×100

We have given that ,

Weight of solute is x g

Mass %=10%

Mass of solution 81 g

→ 10 = 100x/81

x= 810/100

x=8.1 g

option a is correct option