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A certain substance has a heat of vaporization of 44.01 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50 times higher than it was at 289 K?
Write the balanced chemical equation and determine How much propane is required to cook a pork roast that needs 1.6x10 3 kJ
A solution is prepared by dissolving 27.1 g urea, (NH2)2CO, in 171.2 g water. Calculate the boiling point of the solution. Urea is a nonelectrolyte.
Draw the structural formula(s) for the branched constitutional isomer(s) with the molecular formula C7H16 that do not have a methyl
gaseous mixture of 2.34 kg of silane, Sih4 and 55.4 kg of Argon. Determine the mole fraction of silane
liquid nitrogen has a density of 0.807 g/ml at -195.8 C, if 1.00 L of N2 is allowed to warm to 25 C at a pressure
Calculate the fraction of atoms in a sample of argon gas at 391 K that have an energy of 12.7 kJ
Lithium hydrogen carbonate decomposes by heat; the reaction is represented by the balanced equation: 2LiHCO3 (s) --------> Li2CO3(s) + CO2(g) + H20 (g)
At the equivalence point of the titration of formic acid by NaOH, the pH of the solution is around 8 - 10. What would be a good indicator
Write a balanced net ionic equation for the reactions, if any, that occur between (a) FeS(s) and HBr(aq); (b) K2CO3(aq) and CuCl2(aq); (c) Fe(NO3)2(aq) and HCl(aq)
What is the concentration (in mg/L) of dissolved O2 in blood (or water) at this partial pressure and a normal body temp of 37 C? The solubility of O2 in water at 37 C and 1 atm partial pressure is 1.93 x 10^-3 mol/L.
In his explanation of the photoelectric effect, Einstein stated that the incident radiation had to have a minimum energy to dislodge the electron from the metal surface. This energy is called the work function.
Heat evolved per mole of Mg 6) Change in enthalpy for the following specific reaction. Be sure to indicate the correct sign (- or +) for the change in enthalpy. Mg(s) + 2H(aq)===>Mg(aq)+H2(g)
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