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Calculate the mass of C12H22O11, contained in 500.0 mL of solution if the measured vapour pressure of the solution is 121.2 mbar at 50 °C.?
Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapour pressure of the solution is 121.2 mbar at 50 °C. The vapour pressure of pure water at 50 °C is 123.3 mbar; assume no change in volume occurs upon dissolution.
Please help me with this. I get the mole ratio, but I don't know what to do from there. I think I'm supposed to use it to find the number of moles of lactose but I don't know how. Please help.
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