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The total Carbon dioxide content (HCO3 + CO2) in a blood sample is determined by acidifying the sample and measuring the volume of CO2 evolved with a Van Slyke manometric apparatuses.
The volume of sample of gas measured 25 degree C and 1.00 atmpressure is 10.0-L. what must the final temperature be in order to have a final volume 7.5 L at 1.00 atm pressure.
The value between 2.0-L bulb, in which the gas pressure is 1.0 atm,and the 3.0-L bulb, in which the gas pressure is 1.5 atm, is opened. what is the final pressure in the two bulbs, the temperature r
Gaussian function exp(-gx2), where x is the displacement from equilibrium. Confirm that this function satisfies the Schrodinger equation for a harmonic oscillator and find g.
An analytical laboratory balance typically measures mass to the nearest 0.1 mg. What energy change would accompany the loss of 0.1mg in mass?
Sodium hydroxide is a common ingredient in drain cleaners such as Drano. The mole fraction of sodium hydroxide in a saturated aqueous solution is 0.310. What is the molality of the solution?
What are the four side products that are possible for the aldolcondensation between benzaldehyde and acetone?
How many seconds will be required to produce 1.0g of silver metal by the electrolysis of a AgNO3 solution using acurrent of 30A?
500 ml of a .20-M sodium acetate is added to an equal volume of .20-M acetic acid creating a buffered solutionc.Use Le Chatlier's principle and the common ion effect to explain how the pH will be a
A liquid has a molar enthalpy of vaporization of 66 kJ/mol and amolar entropy of varporization of 94 J/mol. Calculate the normal boiling point of the liquid and the temperature at which the vapor pr
Based on the molar mass of anhydrous salt (1.25) calculate the moles of anhydrous salt. determine the smallest whole number ratio of moles of water to moles of anhydrous salt.
A 24 hour urine specimen was diluted to 2.000 L. After the solution was buffered to Ph 10, a 10ml aliquot was titrated with 27.32ml of 0.003960 M EDTA.
It takes 15 kilowatt hours of electrical energy to produce 1 kg of aluminum metal from aluminum oxide by the Hall-Heroult process.Compare this value with the amount of energy necessary to melt 1 kgo
A styrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater. When 1,350 J of heatis added the temperature of the calorimeter raises by 3.5 degreesC.
Write the Lewis formula that the best describes the charge distribution in the sulfuric acid molecule, H2SO4, according to the rules of formal charge.
Hydrogen peroxide solutions sold in drug stores contain 3.0%of H2O2 Hydrogen peroxide decomposes into water and oxygen gas. according to the balenced chemical equation
Explain how the properties of polarity and hydrogen bonding affect such phenomena as surface tension and solubility in water.
How would you show by experiment how rusting is affected by environment? Would you expect the surfaces rusted evenly?
A very dilute solution of silver nitrate is added dropwise to asolution that contains equal concentrations of sodium chloride andpotassium bromide. which salt will precipitate first?
A buffer is prepared by mixing 185 mL of 0.439 M NaOH with 855 mLof 0.869 M sodium bicarbonate (NaHCO3). Given that theKa1 of H2CO3 is 4.5 x10-7 and the Ka2 is 4.7 x 10-11,calculat
How do you calculate the concentration(molarity) of hydronium ion in a solution made by dissolving 1.90gof hydrogen chloride in enough water to make 0.642L of solution?and how do you calculate the p
A 100 mL sample of hard water is titrated with the EDTA solutionin problem 2. The same amount of Mg2+ is added,, and the volume of EDTA required is 22.51 mL.
If we wish to prepare a buffer with a pH of 9.39 from amixture of bicarbonate and carbonate, what ratio of carbonate:bicarbonate concentration should we use? (pKa2for carbonic acid is 10.25)
What is the hydroxide ion concentration of a solution prepared by dissolving 0.731 g of Mg(OH)2 in 427 mL of water?
You will often work with salts ofFe3+,Pb2+, and Al3+ in thelaboratory. (All are found in nature, and all are importanteconomically.) If you have a solution concentration of 0.10M, what is the