- #1

fishingspree2

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## Homework Statement

Find the molality of a sulfuric acid solution which contains 27,0% by mass of H

_{2}SO

_{4}and a density of 1,198 g/mL

## Homework Equations

molality = moles of solvent / mass of H

_{2}SO

_{4}(kg)

## The Attempt at a Solution

If we have 1kg of the solution, then we have 0,270 kg of H

_{2}SO

_{4}

We also have 1 - 0,270 = 0,730 kg of water

If one mole of water weighs 18 grams and we have 730 grams of water, then we have (730/18) moles of water.

molality = moles of solvent / mass of H

_{2}SO

_{4}(kg)

= (730/18) moles / 0,270 kg of H

_{2}SO

_{4}

= 150,2 moles/kg

This is not the correct answer, the correct answer is 3,78

What to do??

Thank you