Question

40% by mass of urea is obtained when 190 g of urea is dissolve in 400 ml of water calculate the density of solutions

Answer 1

Answer: 1.19g/ml

Explanation: mass of urea = 190g

Mass % of urea = 40%

Volume of water = 400ml

Mass % of urea = mass of urea × 100/mass of solution

40% = 190g ×100/m.(solution)

Mass of solution = 190×100/40

Mass of solution = 475g

Mass of solution = 475g

Volume of solution= volume of water= 400ml

Density = mass/volume

Density = 475g/400ml

Density = 1.1875 = 1.19g/ml

Answer 2

Answer:

40% by mass of urea is obtained when 190 g of urea is dissolve in 400 ml of water calculate the density of solutions