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Calculate the pH of each of the following buffered solutions.
a. 0.10M acetic acid/0.25M sodium acetate
b. 0.25M acetic acid/0.10M sodium acetate
c. 0.080M acetic acid/0.20M sodium acetate
d. 0.20M acetic acid/0.080M sodium acetate
A solution is prepared by dissolving 396 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Calculate the mass in grams for a sample of aluminum that absorbs 1.85 when its temperature rises from 65 to 178.
Calculate the concentration of I- in a solution obtained by shaking 0.10 M KI with an excess of AgCl.
Why the presence of a phenyl group causes loss of stereospecificity in this alkene bromination?
Derive an expression for the time dependence of the degree of polymerization for a stepwise polymerization in which the reaction is acid-catalysed by the -COOH acid functional group. The rate law is d[A]/dt = -kr[A]2[OH].
Lindane is a toxic insecticide that causes dizziness and diarrhea in humans. Find the molecular formula for lindane given its percent composition:
Consider the following reaction (assume an ideal gas mixture). 2NOBr(g) ? 2NO(g) + Br2(g) A 3.0-L vessel was initially filled with pure NOBr, at a pressure of 3.6 atm, at 300 K. After equilibrium was reached,
What is the ph of a solution that results from diluting .30 mol acetic acid and .20 mol sodium acetate with water to a volume
a tank contains a mixture of 2 mol Cl2, 5 mol O2, and 3 mol CO2 at 0 C and under a total pressure of 1 atm. calculate the partial pressures of each gas in the mixture
Compute the wavefunction and the probability to tunnel, for a proton in the potential: V(x)=0, when x 0.00 nm, and V(x)=2.0*10-19 J otherwise.
Determine the molar mass of carbon dioxide by measuring the mass of an Erlenmeyer flask full of the gas. The following calculations are intended to familiarize you with the general procedure:
Calculate the amount of heat (in kJ) required to convert 63.3 g of water to steam at 100°C. Use the correct amount of sig figs.
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