Question

a solution is made by dissolving 34 g of NH3 in 2.00 mL of water. calculate the molality of the solution.
answer is 1.02 but i got 0.998. pls show me how to calculate this the right way :/

Answer 1

n(NH3)= m/M
=34/(3x1.008+14.01)
=1.996 mol
molality=1.996/2
=0.998

Answer 2

yeah i got that to. so am i correct? or wrong? or are the answer is just wrong?

Answer 3

yea you should be right~ :)

Answer 4

thnks!