Question

mass of solute =50g mass of solution =kg find mass by mass%​

Answer 1

Explanation:

Molality is defined as the number of moles of solute per kilogram of solvent.

Number of moles of solute is n=

M

m

=

180

x

Weight of solvent is 50/1000=0.05 Kg

Given molality is 0.3 M.

0.3=

0.05

(

180

x

)

⇒x=180×0.05×0.3=2.7 g