Question

aqueous solution of urea is 20% by mass of solution .molarity of solution when density of solution is 1.2g/ml​

Answer 1

How many hydrogen bonded molecules are present in cuso4.5h2o?

In CuSO4.5H2O, four water molecules are coordinated to Cu+2, while one is hydrogen bonded with SO42-.

Answer 2

Answer:

4M

Explanation: first the no. Of moles of urea in this question = 30/60 = 1/3

Now

Mass of soln in l :-

Density = m/v

V= m/d

= 100( mass of soln ) / 1.2 ml

= 1000/12 ml

=12 L ( divided by 1000 to convert into L)

Now

Molarity = no. Of moles / volm of soln in l

= 1/3/1/12

= 4