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When 0.0024 moles of a weak acid are dissolved in enough water to make 0.500 L, the pH of the resulting solution is 5.28. Calculate Ka.
Calculate the pH of a solution that results from mixing 19.8 mL of 0.120 M acetic acid with 20.0 mL of 0.178 M sodium acetate. The Ka value for CH3COOH is 1.8 x 10-5.
What are 2 technological applications of Entropy, free energy and equilibrium. and explain
How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of 2.00 Amperes?
Compute the work of expansion(in Joules) accompanying the complete combustion of 1.0 grams of sucrose C 12 H 22 O 11 to CO 2 and (a) liquid water, (b) water vapour at 20 degrees Celsius when the external pressure = 1.0 atm
if 3.80 mL of vinegar needs 45.0 mL of 0.140 M NaOH to reach equivalence point in a titration, how many grams of acetic acid are in a 1.60 qt sample of this vinegar?
A specific brand of gourmet chocolate candy contains 7.00 g of dietary fat in each 22.7 g piece. How many kilograms of dietary fat are in a box containing 3.00 lb of candy? Express your answer numerically in kilograms.
How many grams of sucrose, C12H22O11, must be dissolved in 750. mL of water to prepare a 0.250 molal solution?
calculate the energy, in joules and calories, lost when 75.0 g of water cools from 86.4 degrees celsius to 2.1 degrees celsius
What is the molality of chromium(III) chloride in a solution prepared by dissolving 75.2 g chromium(III) chloride hexahydrate (CrCl3· 6H2O) in 250.0 g of water.
What is the uncertainty in the energy of the excited state. What is the percentage uncertainty if the energy is measure from the ground state
a 7.95 L Container holds a mixture of two gases at 37 degrees celcius. the partial pressure of gas A and gas B, respectively, are .287 atm and .698 atm. if .210 mol a third gas is added with no change in volume or temperature.
Clearly sketch both a Michaelis-Menten plot (initial velocity vs. substrate concentration) and a Lineweaver-Burke (double-reciprocal) plot showing the activity of an enzyme
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