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Suppose you and your colleagues are tasked to perform a combustion analysis of 0.117g of an unknown compound whose empirical formula and molar mass are CH2O and 180.15 g/mol respectively. When you analyze the mass of carbon dioxide produced during the reaction, you realize that something is wrong because you found 0.517g of carbon dioxide. Analysis of water resulting from the reaction also reveals unexpected results (0.229 g of H2O). One of your colleagues then mentions that he may have mistakenly contaminated the sample with a little bit of octane when he was transferring the weighted sample into the combustion chamber.
Based on your results, how much octane was in the original sample?
For each stereoisomer, draw the structure. Be sure to specify the stereochemistry via wedge-and-dash bonds. 1. (S)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol
If a person were to say that a scientific finding was replicated, he or she would be saying that the finding was
What would ?U and w be if the expansion connects the same initial and final states as in (a) but is done by having the perfect gas expand into a vacuum.
a solution of acidic potassium permanganate is added to a solution of iron (II) sulfate Write an unbalanced net ionic equation
Using curved arrows to show electron movement and bond formation write a reaction mechanism for the acid catalyzed reaction
Strontium metal is produced by electrolysis from molten strontium oxide. The cell operates at 4.0 V with a current of 8.7 * 104 amps. How many kilowatt hours of electricity is used to produce 1.00 kg of strontium metal
If the radius of a benzene ring is 120 pm, what is the energy of the lowest energy transition (in units of nm) for benzene
calculate the heat of reaction in kj. sio2s 4 hfg sif4g 2
Some people have argued that rocket engines will not work because the gaseous products of said engine, pushing against a vacuum of space, do not perform any work, therefore the engine will not propel anything.
calculate the mass of sodium nitrate required to produce 7.00 grams of oxygen according to the following reaction: 2NaNO3 = 2NaNO2 + O2
Determine the ammonia concentration of an aqueous solution that has a pH of 11.50. The equation for the dissociation of NH3 (Kb = 1.8 x 10-5) is
A flask contains 0.180 mol of liquid bromine, Br_2. Determine the number of bromine molecules present in the flask.
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