A solution contains $4\mathrm{.}50$ moles of water, $1\mathrm{.}00$ moles of sucrose $($C$12$H$22$O$11),$ and $1\mathrm{.}70$ moles of glucose. Sucrose and glucose are nonvolatile.

$1$st attempt

Part $1(1$ pt$)$See HintSee Periodic Table

What is the mole fraction of water in this solution?