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Suppose that 0.330 mol of methane, CH4(g), is reacted with 0.480 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released? Express your answer numerically in kilojoules.
A 25.00mL sample of KNO3 solution was diluted to 1.000 x 10^3 mL. The concentration of the final solution is 0.00383 M. Calculate the concentration of the original solution in M.
it takes 48.0 j to raise the temperature of an 10.7 g piece of unknown metal from 13.0 degree celsius to 25.0 degree
Calculate the standard enthalpy change for this reaction using enthalpies of formation.
A solution containing 0.750 g of an unknown substance in 30.0 g of cyclohexane was found to freeze at 3.1 C. What is the molar mss of the unlown substance?
a solution contains naphthalene c10h8 dissolved in hexane c6h14 at a concentration of 13.13 naphthalene by
In aqueous solution, which of the following would be an acid according to the definitions of the Arrhenius, the Brønsted-Lowry, and the Lewis theories?
A current of 5.80A passes through a CrNO3(2) soln for 1.70 hours. How much chromium is plated out of the soln
An unknown Chromium solution was mixed with aliquots of a standard solution of Chromium for atomic absorption spectroscopy. The standard solution contained 1000 ppm of Chromium (this is [s]i)
Two liquids, A and B, show partial miscibility below 52.4 C. The critical concentration at the upper critical temperature is x=0.459, where x is the mole fraction of A. At 40.0 C the two solutions in the equilibrium have x=0.22 and x=0.60, respect..
a 32.0-g sample of water at 290. k is mixed with 51.0 g water at 320. k. calculate the final temperature of the mixture
Give an example of a compound that exhibits ionic bonding and an example of a compound that exhibits a covalent bond.
question exactly one milliliter of palmatic-b acid is thrown into a lake. the solution is is undiluted. it spreads out
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