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the PH of blood stream is maintained by a proper balance of H2CO3 and NaHCO3 concentrations. What volume of 5 M NaHCO3 solution , should be mixed with 10 ml sample of blood which is 2M in H2CO3 in order to maintain a PH of 7.4 . ka for H2CO3 in blood is 7.8*10^-7?
Explain why, in the base-catalyzed halogenation of acetone, the second and third halogenations occur on the same carbon as the first, and not on the carbon or the other methyl group.
Adipic acid can be prepared by the oxidation cleaveage of the CC double bond of cyclohexne. If you require 12.5g of adipic acid what volume of cyclohexene
A certain substance has a heat of vaporization of 58.15 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.00 times higher than it was at 363 K
The temperature of 55.6 g of a material decreases by 14.8C when it loses 3080 J of heat. What is its specific heat?
An element has 2 naturally occurring isotopes. Isotope 1 has 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9042 amu. Find the atomic mass of this element and by comparing it to the periodic table identify it.
1.) What conclusions can you make about the relationship between the volume of a gas and its pressure?
Compute the molar mass of beta carotene if 10.0ml of a solution containing 7.68mg of beta carotene has an osmotic pressure of 26.57mmHg at 25.0C.
A 2.5-g sample of a small protein having a molecular weight of 52,000 g/mol is dissolved in 57.6 mL of water. Calculate the osmotic pressure of the solution in millimeters of mercury at a temperature of 24°C.
the normal boiling point of ethanol is 78 degrees celsius. if the vapor pressure of ethanol is 13.3 kpa at 34.9 degrees
The molecular formula of butane is . It is obtained from petroleum and is used commonly in LPG (Liquefied Petroleum Gas) cylinders (a common source of cooking gas).
It required 105 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 31 s for 1.0 L of O2 gas to effuse. Calculate the molar mass of the unknown gas.
5.00 ml of a water sample was titrated for hardness with 4.15ml of 0.0200m edta. write an equation for the reaction and
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