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Author Question: An unknown compound is composed of 65.44% C, 29.07% O, and 5.49% H. A sample weighing 5.34 g, when ... (Read 50 times)

WhattoUnderstand

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on: Jul 8, 2021

Question 1

An isotonic solution will produce an osmotic pressure of 7.84 atm measured against pure water at human body temperature (37.0 °C). How many grams of sodium chloride must be dissolved in a liter of water to produce an isotonic solution?
◦ 75.5 g
◦ 151 g
◦ 2.58 g
◦ 9.00 g
◦ 18.0 g

Question 2

An unknown compound is composed of 65.44% C, 29.07% O, and 5.49% H. A sample weighing 5.34 g, when dissolved in 60.00 g H2O, lowers the freezing point to -0.600 °C. What is the molecular formula of the compound?  (Kf for water = 1.86 °C/m; C = 12.0, O = 16.0, H = 1.0 g/mol).
◦ C3H3O
◦ CHO
◦ C14H11O6
◦ C5H5O5
◦ C7H5O3
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by WhattoUnderstand on Jul 8, 2021

Beatricemm

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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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WhattoUnderstand

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Reply 2 on: Jul 8, 2021
Thanks for the timely response, appreciate it

juliaf

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Reply 3 on: Yesterday
Wow, this really help

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