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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?
A galvanic (voltaic) cell consists of an electrode composed of iron in a 1.0 M iron(II) ion solution and another electrode composed of copper in a 1.0 M copper(II) ion solution
What is the concentration of the compound in a solution whose absorbance at 291 nm is A = 0.095 with a sample pathlength of 1.00 cm?
Determine the amount of hydrochloric gas that should be bubbled into the buffer to triple hydronium ion concentration is closest to what?
how many moles of no2 gas can be produced from 45.5 g of o2 gas in the following reaction? show your work in the answer
What mass of glucose C6H12O6, would be required to prepare 5.000 X 10^3 L of a 0.215 M solution.
Describe the difference between the following and list any particular advantage possessed by one over the other a)filters and monochromators as wavelength selectors
calculate the number of moles in 75.0g of lead(II) perchlorate trihydrate, Pb(ClO4)2 * 3H2O
Determine the magnesium content (in ppm) of a 100.00 mL sample of drinking water if the following data were obtained. Titrant is 0.0481 M EDTA, 12.78 mL were used when an aliquot of the sample was at pH 13.0
What structure is responsible for the base peak of a cyclohexene and an unsaturated ketone.
How many moles of stem are produced at 2.00 atm and 202.0 celcius by the complete combustion of 12.50 L of methane gas?
An aqueous antifreeze solution is 40.0% ethylene glycol, C_2H_6O_2, by mass. The density of the solution is 1.05 g/ml. Calculate the molality of the ethylene glycol.
Gas tank holds 42kg of gasoline. When gasoline burns, 147kg og oxygen are consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced?
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