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You want to make an acetic acid/acetate buffer, pH 5.6, with a volume of 250 mL, and a final concentration of ([AcOH] +[AcO-]) = 0.1 M. You may only use acetic acid and sodium acetate (no strong acid or base). How many mL of glacial acetic acid would be needed (d = 1.05 g/mL)?
The activity of a radioactive element, El, decreased by 2.0 % over one year. What is the half-life of this element in years
If we define the quantum yield as ? = d[A2]/dt / Ia , develop an expression for the quantum yield of the reaction. e) If the fluorescence is minimal (k3 = 0), what would be the value of
A gas measures 180. ml. at 870C and 800. mm Hg. Find its volume at standard temperature and 800 mm Hg of pressure.
How much energy would be absorbed as heat by 75 g of iron when heated from 295 K to 301 K? (Cp for iron=0.449 J/g*C)
A uniformly charged thin ring has radius 14.5cm and total charge 23.0nC . An electron is placed on the ring's axis a distance 30.0cm from the center of the ring and is constrained to stay on the axis of the ring. The electron is then released from..
Calculate the atomic mass of zinc from the relative peak intensities in the following spectrum. peak intensity for zinc 64 = 100 peak intensity for zinc 66 = 57.4 peak intensity for zinc 68 = 38.6
Consider the solution reaction AlCl3 + 3AgNO3 -> 3AgCl + Al(NO3)3. What volume of 0.100 M AlCl3 will exactly react with 55.0 mL of 0.162 M AgNO3?
Complete and balance te following half-reaction. in each case indicate whether the half-reaction is an oxidation or a reduction. 1.Mo^3+(aq)-->Mo(s)(acidic or basic solution)
given that the density of a given solid and liquid of molar mass 147.2 gmolnbsp 992.6 kg m-3 and 933.4 kg m-3 . at its
What is the concentration of the vinegar in weight percent? (Assume a density of 1.030 g/mL.) If the pH of the vinegar was 3.44, what value is obtained for the Ka of acetic acid?
What is the mechanism for the side products that are formed when 4-methylcyclohexene is formed form the dehydration for 4-methylcylcohexanol
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell (c) What is the value of the equilibrium constant for..
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