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The atomic masses of Li-6 and Li-7 are 6.0151amu and 7.0160amu respectively. Calculate the natural abundances of these 2 isotopes. The average atomic mass of Li is 6.941amu.
Compounds A and B are isomers of molecular formula C9H19Br. Both yield the same alkene C as the exclusive product of elimination on being treated with tert-butoxide in DMSO Hydrogenation of alkene
Find delta H for the solution of one mole of NaOH in H2O If calorimeter constant is 11 cal/deg C
Consider the following thermochemical equation: CH4(g) + I2(g) --> CH3I(g) + HI(g) Enthalpy Value = +23 kJ
Ozonolysis of A followed by dimethyl sulfide reduction produces a single optically active compound C, C5H8O2. Reduction of C with ethereal LiAlH4 affords optically active compound D (C5H12O2) of the (S)-configuration. The 13C NMR spectrum of D is ..
A sample of propane occupies 250.0 L at 125 kPa and 38 degrees celsius. Find its volume at 100.0 kPa and 95 degrees celsius.
At 55.0C, what is the vapor pressure of a solution prepared by dissolving 75.8 g of LiF in 265 g of water?
Use a combination of balanced chemical equations and their K's to calculate the equilibrium constant for the titration of formic acid with NaOH, which you used in the previous question. (Hint: You will need to include the value of Kw at some point..
Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6H5COOH C6H5COO- + H+
What is ?H in kJ for the combustion of 2.86 L of benzene producing CO2(g) and H2O? Assume that the heat of combustion of benzene is -4.18 x 103 kJ/mol. Enter your answer with three significant figures in exponential format (1.23 x 104 = 1.23E4).
A sample advertised as pure fructose obtained at a health food store, is analyzed as follows: a 22.5 gram sample is dissolved in 50.0 mL distilled water and the solution is allowed to slowly equilibrate for one hour.
A turn-of-the-century chemist isolated an aromatic compound of molecular formula C6H4Br2. He carefully nitrated this compound and purified three isomers of formula C6H3Br2NO2, one of which was obtained in very small amounts. Propose a structure fo..
TNT(trinitrotoluene) decomposes exposively What volumes of Hydrogen gas and Nitrogen gas are produced if 5.8 liters of CO is produced ?
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