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Author Question: Calculate the mass of lactose, C12H22O11, contained in 500.0 mL of solution if the measured vapour ... (Read 500 times)

TFauchery

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on: Nov 18, 2019

Question 1

Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is 1.00 g mL-1, and assume no change in volume occurs upon dissolution.
◦ 981 mL
◦ 769 mL
◦ 91.3 mL
◦ 200 mL
◦ 862 mL

Question 2

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.
◦ 280 g
◦ 118 g
◦ 165 g
◦ 94.6 g
◦ 239 g
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Marked as best answer by TFauchery on Nov 18, 2019

huda

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Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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ptx123

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Reply #2 on: Mar 1, 2020
ty


Miranda Sandiego

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Reply #3 on: Nov 21, 2021
thank you


Miranda Sandiego

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Reply #4 on: Nov 23, 2021
thank you
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