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Solid CO2 (dry ice) sublimes at 195 K and its heat of sublimation ?Hsubl = 25.2 kJ/mol. A block of dry ice with a mass of 32.1 g sublimes. What is the entropy change, ?S, of the CO2? (Enter your answer in J/K).
Use the Born-Haber cycle to calculate the lattice energy of LiCl(s) given the following data: ?H(sublimation) Li = 155.2 kJ/mol; I1 (Li) = 520 kJ/mol; Bond energy (Cl Cl) = 242.8 kJ/mol; EA (Cl) = 348 kJ/mol; ?Hf (LiCl(s)) = -408.8 kJ/mol. A
Calculate the ratio of ionized to unionized drug forms that would exist in the plasma at physiological pH (7.4). What is the percent ionized to unionized
the pH of the two equivalence points and the volume
Given the initial rate data for the reaction A+B->C, determine the rate expression for the reaction. [A], M [B], M delta[C]/delta t (initial) M/s
dilute to mark with water and mix. (You will need the extra volume of this most concentrated solution for further studies.) Record your actual standard concentrations accounting for the dilution as Cstd1, Cstd2, Cstd3, and Cstd4, respectively.
The mass spectrum of an organic compound shows the relative abundances of M to be 83.79% and M 1 to be 13.59%. Assuming the peaks are caused by 12C and 13C isotopes,
Indicate which layer( aqueous or organic) each component in the reaction will mainly reside in ( for both products and reactants ) for all the following three reactions: (1)Show the reaction of 1-naphthylamine hydrochloride with sodium hydroxide.
For cell with hydrogen and silver-silver-chloride electrodes, the cell potential was measured at 0.342V at 298K. Calculate the mean activity coefficient for HCL if the molality of the solution is 0.2 m.
30.0 mL of pure water at 280. K is mixed with 50.0 mL of pure water at 348 K. What is the final temperature of the mixture? Ignore significant figures for this problem.
what doe the product and balanced equation of NaOH+NH4HCO3 come out to be. Also what would the product and balanced equation of CuSO4 + a nail be and NH4HCO3 + heat be
A 3.00-liter sample of gas is at 417 Kelvin and 0.65 atmosphere. If the volume is decreased to 1.50 liters and the pressure of the gas is increased to 1.95 atmospheres, what will be the temperature of the sample?
a 0.8054 g sample of an unkown monoprotic acid requires 44.30 mL of the same solution to reach the same endpoint. what is the molar mass of the unknown monoprotic acid
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