Mass of solute equation help needed?

here the solute refers to KCl, so we have to get the mass of KCl. we are given with volume and concentration of solution, from which we can easily calculate the moles.

concentration of solution is given by the number of moles of solute per litre, C= moles/volume.

now moles=Concentration*volume

change ml to L.

then sub in the values and you get moles =0.8

now multiply moles and molar mass to get the mass of solute

its approx 59.68

the answer is B=59.7

Mass Of Solute Formula

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Use the standard equation. ΔT = Kf · m · i You look up the K for benzene and the freezing point of benzene. i will be one for the alcohol. So you know all the numbers but m. Solve for m. m = 5g/molwt/0.1kg solve for molwt.

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