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A chemical engineer studying the properties of fuels placed 1.467 g of a hydrocarbon in the bomb of a calorimeter and filled it with O2 gas (see the figure below). The bomb was immersed in 2.447 L of water and the reaction initiated. The water temperature rose from 21.70°C to 23.35°C. If the calorimeter (excluding the water) had a heat capacity of 403 J/K, what was the heat of combustion (qv) per gram of the fuel?
consider 25.0 g of water at 21.7degc that are mixed with 25.0 g of water at 43.3degc in a foam cup calorimeter. the
A reagent is sold a s a solution that is 60% by mass. What is the molality of the solution if the molar mass of the reagent is 90.0g
A solution is prepared by dissolving 1.29 g of an unknown organic compound in 15.00 g of cyclohexane. What is the molar mass of the compound if the solution has a melting point of -5.1°C
if 2.67 mL of 0.205 M KOH is required to completely neutralize 25.0mL of a CH3COOH solution, what is the molarity of the acetic acid solution?
the space shuttle orbiter utilizes the oxidation of methyl hydrazine by dinitrogen tetroxide for propulsion.4 n2h3ch3l
How would you use a Grignard reaction of an aldehyde or ketone to synthesize diphenylmethanol? Draw the Grignard reagent and the aldehyde or ketone you would use below.
if equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams of ammonia could be produced at maximum yield?
Potassium permanganate, KMnO4, is a powerful oxidizing agent. The products of a given redox reaction with the permanganate ion depend on the reaction conditions used. In basic solution, the following equation represents the reaction of this ion wi..
Calculate pFe2 at each of the following points in the titration of 25.00 mL of 0.02138 M Fe2 by 0.03645 M EDTA at a 7.00 pH: a) 11.00 ml pFe2+ =? b) the equivalence point Ve pFe2+=? c) 20.00 ml pFe2+=
A solution contains 11.00 g of unknown compound dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -6.59 *C. The mass percent composition of the compound is 38.70% C , 9.74% H , and the ..
Pinacol (2,3-dimethyl 2,3-butanediol) gives a mixture of pinacolone (3,3-dimethyl-2-butanone) and 2,3-dimethyl 1,3-butadiene by treating with acid.
A diprotic acid, H2A, has the following ionization constants: Ka1 = 1.1 multiplied by 10-3 and Ka2 = 2.5 multiplied by 10-6. In order to make up a buffer solution of pH 5.80, which combination would you choose, NaHA/H2A or Na2A/NaHA? What is the p..
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