a radiator is filled with a mixture of 3.25kg ethylene glycol (C2H6O2) in 7.75kg of water. calculate the molality of this questi

Question

elena-14-01-66 [18.8K]

3 years ago

14

a radiator is filled with a mixture of 3.25kg ethylene glycol (C2H6O2) in 7.75kg of water. calculate the molality of this questi

on

Chemistry

1 answer:

Vladimir [108] · Answer 1 · 2022-03-07T04:13:34+03:00

Vladimir [108]3 years ago

5 0

3.25 kg in g = 3.25 * 1000 = 3250 g

Molar mass C₂H₆O₂ = 62.0 g/mol

Mass solvent = 7.75 kg

Number of moles:

n = mass solute / molar mass

n = 3250 / 62.0

n = 52.419 moles

Molality = moles of solute / kilograms of solvent

M = 52.419 / 7.75

M = 6.7637 mol/kg

hope this helps!