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Author Question: What is the mass/vol % ethanol in an ethanol-water solution with a density of 0.875 g/mL and ... (Read 57 times)

mydiamond

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on: Jul 8, 2021

Question 1

What is the freezing point of a solution of 7.15 g MgCl2 in 100 g of water? Kf for water is
◦ -0.140 °C
◦ -1.40 °C
◦ -2.80 °C
◦ -4.18 °C

Question 2

What is the mass/vol % ethanol in an ethanol-water solution with a density of 0.875 g/mL and containing 65.0% ethanol by volume? The density of pure ethanol is 0.789 g/mL.
◦ 90.2% ethanol (mass/vol)
◦ 56.9% ethanol (mass/vol)
◦ 51.3% ethanol (mass/vol)
◦ 58.6% ethanol (mass/vol)
◦ 74.5% ethanol (mass/vol)
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by mydiamond on Jul 8, 2021

ngr69

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Reply #1 on: Jul 8, 2021
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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mydiamond

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Reply 2 on: Jul 8, 2021
Gracias!

mochi09

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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