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A 100.0 mL, sample of brackish water was made ammonical and the sulfide it contained was titrated with 16.47 mL of 0.02310 M AgNO3. The analytical reaction is 2Ag+ + S-2 ____Ag3S(s)
Calculate the concentration of HS in the water in parts per million. At the end point
you are titrating 15.0 ml of an aqueous acetic acid with standard 0.300 molarity naoh. the equivalence point is reached
High-purity benzoic acid (C6H5COOH; delta H rxn for combustion= -3227 KJ/mol) is used as a standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter
Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures
metal was heated to 105.45 °C and then plunged into 100.0 g of water at 23.89 °C. The temperature of the resulting mixture became 27.44 °C.
What is the [H3O+] of a buffer that consists of 0.154 M CH3CH2COONa and 0.645 M CH3CH2COOH. Ka of propanoic acid, CH3CH2COOH is 1.3 x 10-5.
Many odors from solvents, perfumes, and paint strippers are derived from aldehydes or ketones
Problem- A pool is 34.1 m long and 41.6 meters wide. is the average depth of the water is 9ft what is the mass in kg og water in the pool.
Explain why the dichlorofluoresceinate anion is adsorbed onto the surface of the AgCl precipitate
Make the best match for each efficiency advantage to one mechanism for organizing enzymes in metabolic pathways. A. soluble enzymes in a lipid-enclosed volume
find the wt percent of C and H. find the smallest integer ration of C:H in the compound
Methanol burns in oxygen to form carbon dioxide and water. 2CH3OH+3O2=2CO2+4H2O. Calculate the rxn of delta H, G & S at 25C
Construct a graph of the Maxewell distribution of speeds (equation 20.4 in Atkins Book) for Cl2 at 100 K and 298 K using excel or mathematica.
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