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How many molecular orbitals can be built from the valence shell orbitals in H2? Give the ground state electron configuration for these molecules and deduce its bond order. H2 ^+ He2 ^+ He2 ^2+ Put the following species in order of increasing bond length, using molecular orbital theory: H2 ^+ H2 He2 ^+ He2 ^2+ H2 ^-
What is the reaction between four carbons with the triple bond on the third and fourth ones and HCl? Then what reaction is that product and HBr
The heat of vaporization of Freon, CCl2F2, is 17.2 kJ/mol at 25* C. What is the change of entropy for one mole of liquid Freon when it vaporizes at 25*C
How much H2O is produced when 20000 g of C2H2 burns completely? Answer in units of grams
why is the experimental mole ratio of Cu/O not exactly a whoe number. Think of what may have happened to the copper during the drying period, and what effect this would have on the calculated values
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland (760 normal pressure). How would the boiling points of a liquid compare in these two locations? Why?
The energy of electron-in-a 1 m box is given as (h^2*n^2)/(8mL^2). find the transition energy form n=3 to n=2. The mass of electron is 9.109e-31 kg and planck constant 6.626e-34 Js
The standard heat of formation \Delta H^\circ _{\rm f} is defined as the enthalpy change for the formation of one mole of substance from its constituent elements in their standard states. Thus, elements in their standard
Calculate the amount of heat required to completely sublime 18.0g of solid dry ice (CO2 ) at its sublimation temperature
What is the ratio of ionized to unionized molecules at pH 8.5. What percentage of the molecule is ionized at pH of 8.5
A 29.0-g sample of water at 250. K is mixed with 51.0 g water at 320. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
How would you write the Sn2 mechanism of sodium chlorophenolate with sodium chloroacetate?
assuming zinc is the limiting reagent, how much zinc (in grams) do i need to fill a 1.0 liter balloon with hydrogen gas at a temperature of 25 degrees celcius and a pressure of 780 mmHg
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