Question

calculate the amount of urea required to prepare 0.5M of 500ml of solution.​

Answer 1

MOLARITY = 0.5M

VOLUME. = 500ml

MOLARITY = NO OF MOLES / VOLUME (in litres)

$0.5 = \frac{n}{500} \times 1000$

0.5=2n

n= 0.25

We require 0.25 moles of urea

i.e 15 grams of urea

Chemical formula of urea is NH2CONH2