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Using terms in the Hartree-Fock energy expression, explain why the lowest-energy triplet state of the He atom is higher in energy than the singlet state.
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. Calculate the energy in J of the electron when it is in the n= 4.00 level.
At a particular temperature, K=2.0x10^-6 mol/L for the following reaction: 2CO2 (g) at equilibrium with 2CO(g) + O2 (g) If 2.1 mol CO2 is initially placed into a 4.2 L vessel, calculate the equilibrium concentrations for all of the species.
What is the H+ concentration of an aqueous solution with a pOH= 4.38 at 25 degrees celcius.
a 4.0 gram sugar cube is dissolved in a 350 milliliter teacup. what is the molarity of the sugar solution.
The drum will be operated at 1.25 psi and 70 F. Do you think a horizontal tank would be larger, smaller, or the same size?
What mass of LP gas is necessary to heat 1.3 of water from room temperature (25.0 ) to boiling (100.0 )? Assume that during heating, 16% of the heat emitted by the LP gas combustion goes to heat the water.
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity
Estimate the molar heat of vaporization of a liquid whose vapor pressure doubles when the temperature is raised from 85 ºC to 95 ºC.
Volume increases isothermally? Two pure gas species are mixed at constant temperature? Temperature increases isobarically? Pressure increases isothermally?
Borazine has the formula (BHNH)3. The combination of a boron atom and a nitrogen atom is isoelectronic with two carbon atoms. How would you draw the stucture of borazine?
Take (a.) galactose (b.) Fructose-6-phosphate through glycolysis, Pyruvate dehydrogenase complex, Citric acid cycle and oxidative phosphorylation and calculate the amount of Atp.
Propose a structure for the compound with the following formula that is consistent with the IR and 1H NMR data shown:
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