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The flask shown here contains 0.649 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.160 M NaOH. The volume of end point titration is 20.5ml. What is the molar mass of the acid (assuming it is diprotic and that the end point corresponds to the second equivalence point)?
Give the structure of the product formed when adipic acid (HOOC-(CH2)2-COOH) is reacted with a large excess of 1-propanol with a sulfuric acid catalyst
For the kinetic assay, 0.2mL of a 0.15mg/mL solution of enzyme was used, and the enzyme has a molecular weight of 75,000g/mole. Assume a reaction volume of 3mL. Calculate the kcat (in sec^-1) for the enzyme.
Rank the following regions of the electromagnetic spectrum in order of decreasing frequency.X rays, Microwaves, Infrared, Ultraviolet A) infrared, microwaves, ultraviolet, x rays B) x rays, microwaves, infrared, ultraviolet C) microwaves, infrared..
Why does an atomic absorption instrument not need a high resolution monochromator, but an atomic emission instrument does
Compute the electrode potential of hydrogen electrode at standard temperature if the electrode is immersed into acidic solution with pH = 2.85 and the partial pressure of hydrogen gas p(H2) = 0.73 atm.
Calculate the volume of the gas, in liters, if 1.65 mol has a pressure of 0.995 atm at a temperature of -4 degrees Celsius. Calculate the absolute temperature of the gas at which 3.13 x 10-3 mol occupies 335 mL at 760 torr.
What are the possibilities of the experimental error. Why is the zero order correlation coefficient better than first order
Which of the following is correct? A) Solubility is the concentration of unsaturated ions in solution. B) Ksp is the same as the solubility. C) Ksp is an equilibrium constant and solubility is the concentration of a saturated solution
Problem- Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 9.00torr at 35oC. The vapor pressure of pure ethanol at 35oC is 1.00o102 torr.
indicate whether each of the following statements indicates an acid or a base: a)makes a red ant sting burn. b)produces OH^- in water. c) has a soapy feel. d) turns litmus red.
If you compare D-galactose to L-galactose, all groups attached to the carbon skeleton of the D-galactose are on the opposite side compared to L-galactose
calculate the amount of energy present in the following photons and find the region of electromagnetic spectrum for
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