Please solve: 105mL of pure water(at 4 celsius) is saturted with NH3 gas, producing a solution of density....

Question

0.9g/mL.If this solution contains 30% of NH3 by weight, calculate its volume.

Answer 1

the mass of 105mL of water at 4 celsius is 105g
saturated the water represent (100-30)% =70%=0.7
so the mass of the solution is 105/0.7 = 150g
The density is 0.9 meaning 1 mL weights0.9g

the volume is 150/0.9 =166.7mL