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In 1934, Edward A. Doisy of Washington Univeristy extracted 1361 kg og hog ovaries to isolate a few milligrams of a potent female hormone. Doisy burned 5.00 mg of this precious sample in oxygen and found that 14.54 mg of CO2 and 3.97 mg of H2O were generated.
(a) determine the empirical formula of the hormone
(b) the molecular weight of the hormone was later determined to be 272 g/mol. determine the molecular formula of the hormone.
Mercury, with a freezing point of -38.8 degrees Celsius, is the only metal that is liquid at room temperature. How much heat energy must be removed from 1.00 mL of mercury at 23.0 degrees Celsius to produce solid mercury?
To find the of X-281, you prepare a 0.086 test solution of X-281. The pH of the solution is determined to be 2.70. What is the of X-281
What is the value of Kc for the decomposi- tion of ammonium carbamate into ammonia and carbon dioxide?
When 85.0 g of CH4 are mixed with 160 g of O2 what is the maximum amount of CO2 that can be produced?
A 455-g piece of copper tubing is heated to 89.5 Celcius and placed in an insulated vessel containing 159g of water at 22.8 degrees Celcius. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temerature? (c..
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant.
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water
Which of the following properties would you expect to be different for the two enantiomers of 2-pentanol? A. boiling point
What is the theoretical yield of calcium carbonate if 2.05 grams of calcium chloride dihydrate reacts with excess sodium carbonate according to the balanced chemical reaction shown below?
Mechanistic rationalization of the effect of the chloro substituent on reactivity (B) Propose an additional experiment to test your mechanistic rationalization IV.
Disposable lighters burn butane (C4H10) and produce CO2 and H20. Balance the chemical equation for this combustion reaction and determine how many grams of CO2 are produced by burning 1.00 g of C4H10.
Compute the equilibrium constant, Keq, for the reaction of equimolar amounts of acetophenone, C6H5COCH3, and hydroxide ion to generate the enolate ion.
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