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Bicine is a compound containing a tertiary amino group where relevant pKa is 8.3. Given one L of 0.05 M bicine with its tertiary amino group in the unprotonated form, explain how much 0.1 M HCL must be added to have a bicine buffer solution of pH 7.5? Explain what is the molarity of bicine in the final buffer?
How many moles of OH were used to reach the end point? How many moles of H from HCl were used for back titration? How many moles of H from the solid were neutralized? What is the equivalent mass of the unknown acid?
From the understanding of colligative properties, how would I design an experiment to measure the freezing point of a material which freezed at -2'c using the same apparatus used in the laboratory and any chemical reagents commonly found in a chem..
A certain substance has a heat of vaporization of 39.67 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 323K
If the value of Kc for the reaction is 2.50, what are the equilibrium concentrations of the products if the reaction mixture was initially 0.500 M SO2, 0.500 M NO2, 0.00500 M SO3, and 0.00500 M NO
What is the pH of a solution of 0.20M RbCHO2? Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unless the "x is small" approximation can be used.
Calculate the total mass of the neutrons in 19/9F. Use 1.008665 amu as the mass of 1/0N(mass of a neutron). Express your answer in atomic mass units to 7 significant figures. Calculate the mass defect of 19/9F. Use 18.9984 amu as the actual mass o..
question suppose the current flowing from a battery is used to electroplate an object with silver. calculate the mass
Determine the osmotic pressure at 25 °C of an aqueous solution that is 0.028 M NaNO3. A) 1.37 atm B) 0.685 atm C) 0.0729 atm D) 0.0364 atm E) 2.06 atm
What mass of carbon dioxide is present in 1.00m^3 of dry air at a temperature of 25c and a pressure of 731torr? Calculate the mass percentage of oxygen in dry air.
An artist statue has a surface area of 14.6 feet squared. the artist plans to apply gold plates to the statue and wants the coating to be 2.5 micrometers thick. If the price of gold were $625.10 per troy ounce, how much would it cost to give the s..
Calculate the equilibrium pressure of the H2O vapour at both 0oC and 25 oC. The value of ?H is 522.0kj/mol, why may be assumed constant over the temperature range of interest.
If you wanted to make 150mL of a NaCl solution at a concentration of 1.5%, how would you dilute a 1.0 M solution
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