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When an 8.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 3.993 kJ•K-1, the temperature decreases by 0.360 K. Compute the molar heat of solution of KCN.
What is the half-life? b) How long would it take for the concentration of CH3CN to decrease to 25% of its initial value? c) To 12.5% of its initial value?
(a) How long does it take to grow 800 nm thick oxide layer in a dry oxidation environment at 800 C. (b) What happens if we increase the temperature to 1200 C
What is the osmotic pressure of a solution made from dissolving 85.0g of glucose in 800ml of water at 19.0 C.
data below show equilibrium constant for this reaction meassured at several different temperature. use data to find dHrxn and dHSrxn for reaction
69.7 grams of solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm3 of solution at
explain why there are significant color changes that occur insubstitution reactions. talk about the origins of color
Calculate the amount of heat required to raise the temperature of 100.0g of water from -0.10 C to +0.10 C
considering the given equation fe2o3 s 3 co g ? 2 fe s 3 co2 g this is the overall reaction for the production of
Hydrogen sulfide decomposes according to the following equation, for which Kc = 0.00011 at a given temperature. 2 H2S(g) 2 H2(g) + S2(g)
compressed reversibly and adiabatically until the temperature reaches 250K. Given that its molar constant-volume heat capacity is 27.5J/Kmol, calculate final pressure and final volume.
Determine the pH of the solution containing 8*10^(-3) M each of HF and NaF. Assume that NaF dissociates completely. Acid Dissociation constant for HF is Ka=6.3*10^(-4).
Compute the moment of inertia of the molecule in kg m 2 . And also determine the greatest wavelength of the radiation that can excite the molecule into rotation.
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