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A 2.56 g sample of anthracene, C14H10, was burned to heat an aluminum calorimeter (mass = 948 g). The calorimeter contained 1.50 L of water with an initial temperature of 20.5 C and a final temperature 34.3C
a) Calculate the molar heat of combustion of anthracene.
b) Write the thermochemical equation, two ways, for the complete combustion of anthracene.
c) If the actual value for ΔH = -7150 kJ/mol, what is the percentage error?
In the commercial preparation of aluminum, aluminum oxide, Al2O3, is electrolyzed at 1000 degrees Celsius mineral cryolite is added as a solvent. Presume the cathode reaction is Al3+ (aq) +3e- --> Al(s)
According to the Bohr model, an electron in the ground state of a hydrogen atom orbits the nucleus at a specific radius of 0.53 A°.In the quantum mechanical description of the hydrogen atom, the most probable distance of the electron from the nucl..
If 5.00 ml of a solution containing .0400 M iron is placed in a 100.0 ml volumetric flask and filled to the mark with deionized water, what will be the concentration of iron in this new solution?
Sulfur dioxide is released in the combustion of coal. Scrubbers use aqueous slurries of calcium hydroxide to remove the SO2 from flue gases. Write a balanced equation for this reaction.
A solution is initially 2.5 x 10-3 M in Cu+ and 2.5 x 10-3 in Pb 2+. Iodine ion is gradually added to the solution. Determine the concentrations of Cu+, Pb +2, and I- at the point of maximum separation. The solubility products of CuI and PbI2 are ..
how many constitutionally isomeric monochlorides can be formed on free-radical chlorination
a what is the concentration of baoh2 in abaoh2 solution if the ph is 8.25?b what is the concentration of ammonium ion
show states of matter and charges where appropriate. Also find molecular equation, total Ionic Equation, and Net Ionic Equation.
calculate the theroretical yield of c2h5cl when 123 g of c2h6 reacts with 220 g of cl2 assuming that c2h6 and cl2 react
A mixture of .148 moles of C is reacted with .117 moles of O2 in a sealed 10L container at 500K producing CO and CO2. The total pressure is .640 atm. What is the partial pressure of CO?
1. if the concentration of the orginal solution of 1.0 mcuno32 was actually less than 1.0 m howwould this affect the
Problem- Write the ion product expression at equilibrium for each compound: (a) calcium sulfate. (b) chromium(III) carbonate (c) magnesium hydroxide (d) arsenic sulfide
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