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Find the volume (mL) and pH of 0.0588 M KOH needed to reach the equivalence point(s) in titrations of the following.
(a) 20.8 mL of 0.0376 M HNO2
(b) 14.8 mL of 0.104 M H2CO3 (two equivalence points so both the first and second volumes and pHs are required)
pcl5g reverse reaction arrow pcl3g cl2gsuppose that 3.314 g of pcl5 is placed in an evacuated 460. ml bulb which is
the amount of product formed in the reaction mixture was 12 micro-moles. If, in a separate experiment, one-third as much enzyme and twice as much substrate had been combined, how long would it take for the same amount (12 micro-moles) of product t..
Determine the wavelength, in nanometers, of radiation with of 218 kj/mol energy. please show how you came up with answer
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.
A 12.4 g sample of CaCl2 is dissolved in 112 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·..
Enough of a monoprotic acid is dissolved in water to produce a 0.0137 M solution. The pH of the resulting solution is 6.48. Calculate the Ka for the acid.
cylinders of compressed gas are typically filled to a pressure of 200 bar. for oxygen, what would be the molar volume at this pressure and 25 degrees Celsius based on the van der waals equation
the tosylate of 2s3r-4-methyl-3-phenylpentan-2-ol undergoes an e2 elimination on treatment with sodium ethoxide. draw
Na3PO4+CaCl2 ---> Ca3(PO4)2+NaCl if 0.996 g of Na3PO4 are provided, how many grams of Ca3(PO4)2 should be formed?
A sample of 24.0 g of helium (He, M = 4.00 g/mol) has a temperature of T = 108 K and a pressure of 2.86 atm. Assuimg the this sample follows the perfect gas law, determine the volume it occupies.
Calculate the Pickering series wavelength associated with the excited state ni = 8. What region of the electromagnetic spectrum does this transition fall in?
a melting point of 328.0 Celsius degrees, and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0 kg sample of lead with a temperature of 20.0 Celsius degrees
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