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Buffer with pH of 5.5. Kb for aniline is 4.2 x 10-10, calculate the ratio of amine salt to dissolved amine for aniline
Determine the change (deltaT/deltaP) in the freezing point of ice with increasing pressure. the molar volume of water is 18.02 cm3 mol^-1 and the molar volume of ice is 19.63 cm3 mol^-1. The molar heat of fusion deltaHfus =6.009 *10^3J mol^-1
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
A gaseous mixture of and contains 35.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585 ?
Arrange the following aqueous solutions in order of increasing freezing point. 0.10m glucose, 0.10m BaCl2, 0.20m NaCl, and 0.20m Na2SO4
An impure sample of sodium carbonate, (Na2CO3) is allowed to react by dissolving it in an aqueous solution of 0.134 M HCl, according to the following reaction:
Ethanethiol (C2H6S) is a compound with a disagreeable odor that can be used to impart an odor to natural gas. When ethanethiol is burned, the sulfur reacts with oxygen to form SO2
If 285.5 mL of SO2 reacts with 158.9 mL of O2 (both at 315K and 50.0 mmHg) what is the limiting reactant and theoretical yield of SO3
a solution is 40 acetic acid by mass. the density of this solution is 1.049 gml. calculate the mass of pure acetic acid
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 288 oxygen molecules are used up in this reaction, how many sulfur molecules reacted. In the reaction above, how many molecules of sulfur dioxide were formed
Write the total ionic equation for this reac- tion occuring in water: Calcium sulfide and iron(II) bromide are mixed to form iron(II) sulfide and calcium bromide.
Calculate the expansion work done when 50g of water is electrolysed under constant pressure at 25C.
converted completely to FeNCS 2+ when the calibration curve was prepared, would this raise or lower the value of Keq? explain?
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