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Oxalic acid is the first in the series of dicarboxylic acids (HOOC-COOH, H2C2O4). It occurs naturally in many plants. Oxalic acid content is high in the leaves of rhubarb (we don't eat the leaves because they are poisonous). Calculate the pH of a 0.100 M oxalic acid solution. Ka1 = 5.6x10-2, Ka2 = 5.4x10-5
Calculate the wavelength (?) of the light in nanometers (nm) corresponding to the energy change (?E) value of this transition. You can use the following values for your calculations
The present report is based on an illustration of molecules or biomolecules that have a chemistry related background. The topic of selection is based on cardiac care and diseases
In the following unbalanced reaction, what is the total decrease in oxidation number for the reduced element?
Calculate the cell potential at 298 K of the galvanic cell below. Assume no current draw and a perfect salt bridge. Pt(s)| Cu2+ (0.05 M), Cu+ (0.50) || Fe2+ (0.01 M), Fe3+ (0.10 M) | Pt(s)
The nature of the intermediates in E1 and Sn1 reactions are carbocations. If the molecule doesn't follow that formula then it has either double bonds or rings or both.
A 0.01 M solution of hyperchlorous acid , which is a monoprotic acid, has a pH of 6.5 at 67 degrees C. Determine the Ka value of this acid.
Ribonuclease P proteins RPP21 and RPP29 bind one another during complex assembly. Thermodynamic measurements reveal that ΔH° = -66.3 kJ/mol and ΔS° = -73.2 J/mole*K at 40°C. What is the equilibrium constant for the binding reaction at 40°C?
Explain how much heat is evolved when 50.0mL of CS2 (d=1.263 g/mL) react with 5.00 L of chlorine gas at 2.78atm and 27 degrees Celsius
Draw the appropriate titration curve for the tripeptide Met-Lys-Val, starting at pH 1 and ending at pH 12, On the curve label the pKas and the pI
which of the following would have the lowest freezing point?a. 1 m cano3b. 0.1 m kno3c. 0.1 m hcld. 0.1 m sucrosee. 0.2
A vessel containing saturated vapor steam at 175 C is cooled to 40 C. The total mass of its contents is 450g. Determine the final volume of liquid water in the vessel.
How to do I calculate the pH of original buffer given mass of NaC2H3O2*H2O (FW =136 g/mol) = 3.507 gafter measuring out 8.8 mL of 3.0 M acetic acid to add to the beaker containing the sodium acetate. Then put in 55.6 mL of distilled water with the..
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