CHEM 183 Lecture Notes - Lecture 1: Adrenal Gland, Thomas Addison, Feel Young

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24 Apr 2023

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McGill University

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Chemistry

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CHEM 183

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CHEM 183 Full Course Notes

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David is weaker and smaller than the giant and the end he cuts off his head. Hormones: giant suffer from multiple endocrine neoplasia. Excessive growth: visual problem may have pituitary problems, cuz the hormone is control by pituitary gland. Time when animal and human experiment wasn"t a problem (no ethical problems) Examine: what happen to rooster is castrated (testes are removed: want to know is there relation btween the teste (man symbol) and the crown there is a connection, observed: shrinking of their combs (normally it stand up ) Castrated roosters and return a testicle into the body cavity: observe: rooster showed normal sexual behavior and comb development. Today: tested produce testosterone control the sex trial. The comb of the rooster head signal the female that he is interested. Important observation: noted on autopsy that ppl who had atrophied adrenal glands had shown poor appetite, low blood pressure, weakness, anemia and bronzed skin.

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1) A solution is prepared by dissolving 27.8 g urea,(HN2)2CO , in 120.0 g water. Calculate the boiling point of the solution. Urea is a nonelectrolyte. (This problem requires values in your textbook's specific appendices, which you can access through the OWLv2 MindTap Reader. You should not use the OWLv2 References' Tables to answer this question as the values will not match.) Boiling point = Â°C

2) What mass of glycerin (C3H8O3), a nonelectrolyte, must be dissolved in 200.0 g water to give a solution with a freezing point of â3.30Â°C? (This problem requires values in your textbook's specific appendices, which you can access through the OWLv2 MindTap Reader. You should not use the OWLv2 References' Tables to answer this question as the values will not match.) Mass =

3) Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. When 2.96 g thyroxine is dissolved in 65.0 g benzene, the freezing point of the solution is depressed by 0.300oC. What is the molar mass of thyroxine? (Kf for benzene is 5.12oCâkg/mol.) = g/mol

For Problems 2 and 3, use the n-hexane, n-octane data from Problem 1. Number 1 answer is shown above on the graph. Please find problems 2 and 3!!

Problem 2 â A mixture of 100 mol containing 65% n-hexane and 35% n-octane is vaporized at 101.32 kPa abs pressure until 35 mol of vapor and 65mol of liquid are in equilibrium with each other. This occurs in a singlestage, closed system such that the liquid and vapor remain in contact untilcompleted. Calculate the composition of the liquid and the vapor.

Problem 3 âThe starting mixture as Problem 3 is vaporized until 35 mol ofvapor are removed, but this is instead done under differential conditions (thevapor is removed from the system as it is produced). Calculate the averagecomposition of the distillate and the composition of the remaining mixture.

There should be no xa or ya just x and y.

CHEM 183 Lecture Notes - Lecture 1: Adrenal Gland, Thomas Addison, Feel Young

CHEM 183 Full Course Notes

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