Question

Disssolving 120g of urea(mol wt 60)in 1000g of water gave a sol of density 1.15g/ml.the molarity of the solution is ....? please tell me detailed steps.

Answer 1

Please tell me soon

Answer 2

Do u knw wat is Molarity..?

Answer 3

\[D=\frac{ M }{ V }\]

\[V=\frac{ M }{ D }\]

M = 1000 + 120 = 1120gm

Answer 4

but the answer is 2.05M

Answer 5

Lol....First Find V

then use Molarity = no of moles of solute / Volume (L)

Answer 6

how to find V

Answer 7

hm..thats wat i have Given u.....)

Answer 8

1.15 g/ml = 1150 g/L

Answer 9

\[V = 1120/1150 = 0.973L\]

no of moles = 120/60 = 2

Answer 10

\[M = 2/0.973 = 2.05M\]

Answer 11

hope u got it...)

Answer 12

tks

Answer 13

Welcome..)

Answer 14

yahoo...yahooo......oooooooooooooooo..............

Answer 15

please wait i have to ask u another question

Answer 16

Why NPN transistors a more preferred than PNP?