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Question- A solution is made by mixing 500mL of 50mM acetic acid (pKa = 4.74) and 500mL of 50mM sodium acetate. What is the pH of the resulting solution?
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Explain when 14.0ml of HCL of unknown concentration but less than that of the base are reacted with 15 ml of 3.218M NaOH, 2.01 KJ of heat are released. Explain what is the molarity of the HCL solution
Question- Write the eqilibrium reactions, mass balance equation and charge balance equation for a saturated aqueous solution made by dissolving MgBr2 to give Mg2+, Br-, MgBr+ and MgOH+.
Air is flowing through a duct. The atmospheric pressure is 730 mm Hg. What is the absolute pressure of the air in inches of mercury
Compute the molar concentration of Cu2+ for a solution prepared by mixing 25mL of 0.10 M CuCl2 with 25mL of 0.10 M NaOH.
when aqueous solutions of lead ii ion are treated withpotassium chromate solution a bright yellow precipitate of leadii
The resulting solution freezes at 26.5 oC. If Kf for the solvent is 1.74 o C/m then determine the molar mass of the nonelectrolyte compound?
X-ray radiation is associated with transitions in which inner core electrons are being ejected from the atom. Suppose a photon of wavelength 240 pm ejects an electron from the inner shell of an atom and it emerges with a speed of 13.0 Mm s-1.
The melting point range is measure for two materials (A and B). For material A, the melting point range is from 58.5 C to 64.0 C whereas for material B, the melting point range is from 87.0 C to 89.0 C. Which material, A or B, is more pure
Based on the following chemical equation 2C6H6 + 15O2 12CO2 + 6H2O calculate the number of moles of CO2 that will be produced
What is the buffer-component ratio, [Pr - ]/[HPr], of a propanoate buffer that has a pH of 5.57 (Ka of HPr = 1.3 multiplied by 10-5)
The molarity of the potassium dichromate is a result of two sequential dilutions. Re- member that you can obtain the dilution factor from the volumes in the dilutions, V2/V1.
In coffee, how much would the boiling point (in C) of the water be raised by the addition of 0.2 g of caffeine (C8H10N4O2) to 5.0 L of water in making this so much coffee
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