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Draw the LUMO Huckel MO for the cation 1, 3, 5-heptatriene (carbocation is carbon 7). Also, please state the number of pi electrons in this conjugate system. 3,000 points for ACCURATE DRAWING. I will NOT rate cut and paste responses from various websites as those are not helpful.
A .692 L NaCl solution is diluted to a volume of 1.25 L and a concentration of 4.00 M. What was the initial concentration?
How many moles of HF (Ka = 6.8 10-4) must be present in 0.165 L to form a solution with a pH of 2.25?
Suppose that 1.08 g of rubbing alcohol (C3H8O) evaporates from a 75.0 g aluminum block.If the aluminum block is initially at 25 C, what is the final temperature of the block
Predict the rate of change in the concentration of N2O over this time interval. In other words, what is dt [N2O]/ dt?
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
A rock contain 3.2 grams of a radioactive isotope, uranium-235, . Determine what was the original amount of uranium-235 in the rock If the rock has undergone 2.75 half lives, and how old is the rock?
In a solution of acetone and ethanol, the mole fraction of acetone is 0.40. What is the concentration of acetone as a mass percent?
Which best describes a solid?
What are the atomic orbitals used in the double part of the double bond If the C-C axis of the given molecule is the y axis, and the x axis is up and down in the plane of the paper,?
You need to produce a buffer solution that has a pH of 5.02. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? ..
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 6.10 MJ of energy (in the form of heat)
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