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Question- A major buffering system in the blood is H2CO3/HCO3-. At first glance this would appear to be a poor choice. At the normal blood pH (7.4) a solution of H2CO3 and HCO3- will change pH abruptly if small amounts of acid or base are added since the pKa of H2CO3 is 6.4.
Offer an explanation for this apparent contradiction. Support this argument with appropriate chemical equations. H+ (aq) + HCO3- (aq)<=> H2CO3 (aq) <=>CO2 (g) + H2O (l)
I want you to explain the chemistry in this problem
In a solution of acetone and ethanol, the mole fraction of acetone is 0.40. What is the concentration of acetone as a mass percent?
its molar mass is 71.61 g/mol, how many grams of this compound must you burn to release 866.80 kJ of heat?
distinguish between an organic molecule that is dextrorotary and one that is levorotary.
The concentration of cadmium in seawater can be determind spectrophotometrically. To six 50.0mL seawater samples, various volumes of a 10.0ppm cadmium solution were added and all were taken through the analytical procedure with the following resul..
the vapor pressure of a solution containing 53.6 g glycerin c3h8o3 in 133.7 g ethanol c2h5oh is 113 torr at
Calculate the volume change upon mixing sufficient ethanol with 8.85mol of water to give this concentration. The densities of water
Poly (ethylene glycol) can be prepared from either ethylene glycol or ethylene oxide. Write a balanced equation for each reaction, and classify each as addition or condensation polymerization.
Chloroform is an excellent solvent for extracting caffeine from water. KD = 9 for caffeine in chloroform-water at 25 degrees celecius. What weight of caffeine would be recovered from a solution of 4.0 g caffeine in 100 mL water by a single extract..
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm.
Problem- Using 25 mL volumetric flaks, prepare a minimum of 5 dilutions of the stock 250 ppm calcium solution to cover the range of 1-20 mg/L of calcium. Diluting to the mark with 0.50 M HCl.
A solution is made by combining 500ml of .10M HF with 300ml of .15M NaF. What is the pH of the solution? (Ka=7.2e-4 for HF)
The Orsat analysis of the flue-gas gives 13.9% CO2, 0.8% CO, 4.3% O2, and 81.0% N2. Calculate the percent of excess air based on complete combustion of the coke.
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