Question

If 120 g of urea (NH2CONH2) is dissolve in 1000 g of H2O. Find molarity if density of solution is 1.12 gram per millilitres​

Answer 1

Answer:

2 M

Explanation:

solute (urea) = 120g = 120/60 = 2 moles

solvent (h2o) = 1000g

solution = 120+1000= 1120g

vol = mass/density

    = 1120/1.12

    = 1000 ml = 1 L

Molarity = 2 / 1

= 2 M