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Prepare a molecular orbital energy level diagram for SH2 molecule and answer the following questions:
a. How many group orbitals can be formed from two 1s orbitals of H atoms and what are their symmetries? Sketch a diagram for each group orbital.
b. List all symmetries of 3s orbital and three 3p orbitals of S atom.
c. Sketch a molecular orbital energy level, show the symmetry for each one, and indicate how each orbital is formed from the group orbital of 2H atoms and the atomic orbitals of S atom.
Determine the amount of heat produced when 100 g of CH4 combust, CH4 + 2O2 yields CO2 + 2H2O + 1063kJ
The specific heat of liquid bromine is 0.226 J/g-K. How much heat (J) is required to raise the temperature of 10.0 mL of bromine from 25.00C to 27.30C? The density of liquid bromine: 3.12 g/mL
What is the mass of one mole of the gas when the density of a gas is 0.0151 g/mL at 150 degrees Celsius and 1.50 atmospheres?
An interstitial alloy prepared from two metals. metal A with the larger atomic radius has a hexagonal closed-packed structure. What if the formula(for example:A2B,AB,AB2)of the alloy if atoms of metal B occupy the following?
Calculate w (in kJ) when 390 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 426 K.
How many moles of N2O3 are needed so that you have 2.55 x 1024 oxygen atoms.
Does the octet rule mean that a diatomic molecule has 16 valence electrons? Select from the following:
A buffer solution was prepared by mixing 25.0 ml of 0.5M sodium acetate with 35.0ml of 0.6M acetic acid. Calculate the pH. The Ka for acetic acid is 1.7x 10^-5
What is the partial pressure of hydrogen gas in a mixture of hydrogen and helium if the total pressure is 588 mm Hg and the partial pressure of helium is 445 mm Hg?
A sample of sodium reacts completely with 0.355 of chlorine, forming 585 of sodium chloride. What mass of sodium reacted?
Give explanation why the boiling point of a 2-component mixture increase slowly throughout a simple distillation while the boiling point differences are not large?
What is the limiting reactant? b) How many grams of magnesium hydroxide can be theoretically obtained? c) If only 2.009g of magnesium hydroxide are obtained, what is the percent yield of the reaction?
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