The density of acetonitrile $(C{H}_{3}CN)$ is $0\mathrm{.}786$

$\frac{g}{m}L,$ and the density of methanol $(C{H}_{3}OH)$ is

$0\mathrm{.}791\frac{g}{m}L.$ A solution is made by dissolving $21\mathrm{.}0$

$mLC{H}_{3}OH$ in $98\mathrm{.}6mLC{H}_{3}CN.$

Part A

What is the mole fraction of methanol in the solution?

${}_{C{H}_{3}OH}=$

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Part B

What is the molality of the solution? Assuming $C{H}_{3}OH$ is the solute and $C{H}_{3}CN$ is the solvent.

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Part C

Assuming that the volumes are additive, what is the molarity of $C{H}_{3}OH$ in the solution?

$M=$