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The vapour pressure of a substance at 20? is 58.0kPa and its enthalpy of vaporization is 32.7 kJmol-1. Estimate the temperature at which its vapour pressure is 66.0kPA
a certain substance intially present at 0.500 m decomposes by second-order kinetics with a rate constant of 4.00 x 10-1
Assuming the lagoon is well mixed and that there are no losses or gains of waterin the lagoon other than the sewage input, what biodegradation reaction rate coefficient (d-1) must be achieved fo a first-order reaction
the proton nmr spectrum of a compound gives a singlet at ? 2.10 and ? 2.56 in a ratio of 32 respectively. which
The initial temperature of the calorimeter is 20.7oC. If 6g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter?
What is the pH of the resulting solution if 30.00 mL of 0.10 M acetic acid is added to 10.00 mL of 0.10 M NaOH. Assume that the volumes of the solutions are additive. Ka = 1.8 x 10-5 for CH3CO2H.
Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S2(g)+C(s) CS2(g) Kc=9.40 at 900K How many grams of CS2(g) can be prepared by heating 16.4 moles of S2(g)
Describe any evidence that a chemical reaction occurred when you added 6 M HCl to the solution of sodium salicylate. Explain why the changes you observed took place.
What is the freezing point of a solution of a nonelectrolyte dissolved in water if the concentration of the solution is 0.24 m?
Examination of the product mixture revealed that only about half of the starting material had been consumed and practically no PhCOCHBrCH3 was present. Explain these observations and draw the product that did form in the reaction.
Draw the final products in the reaction of N,N-diethylethanamide and diisobutylaluminum hydride Please look at the picture I tried to provide. I have to connect and disconnect atoms to make the final product. Please indicate what needs to go where an..
Compute the final temperature of the mixture (assuming no heat loss to the surroundings.)
To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 3.40mol of gas D measured at 251 C in a 1.75-
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