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Speculate on the structure of the crossed benzoin-like compound formed while 4-dimethylaminobenzaldehyde is condensed with 4-chlorobenzaldehyde? Explain what structure will be formed?
the half-life of tritium 31h is 12.3 years. if 47.0 mg of tritium is released from a nuclear power plant during the
calculate the purity of the ammonium chloride in the sample.
How many grams of F2 must react with NaCl in the following reaction if 800 kJ of energy are released. 2NaCl + F2 --> 2NaF + Cl2, ΔH = -320 kJ
A gas originally at 30.0 C and 1.00 atm pressure in a 3.9L flask is cooled at constant pressure until the temperature is 11C. The new volume of the gas is _______ L.
Draw the structure of the product you would have isolated if you had used NaBD4 in D2O in this experiment and write a mechanism explaining the result. Give the product structure for the same reaction using NaBD4 in H2O.
Glass tempering can be accomplished by both thermal and chemical means. Each puts the near surface region of the glass piece into compression, thereby suppressing growth of surface cracks.
How many moles of magnesium are needed to react with 16.0 g of O2?
Explain why a hydroxyl group in the para position (p-hydroxybenzoic acid, pKa=4.48) decreases the acidity while a hydroxyl group in the meta position (m-hydroxybenzoic acid, pKa=4.07) increases the acidity relative to benzoic acid (pKa=4.19).
Starting with Hamilton's equation of motion for classical mechanics, p^2/(2m) + V=E , obtain Newton's equation of motion, F= ma.
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows.
If we assume that the volume change is due entirely to this density change (that is we neglect thermal expansion of the ice/water), what is the difference between the enthalpy change and the energy change during theis process? Is this a significan..
a cube of zirconium has a mass of 343 g. if each side of the cube has dimensions of 3.75 cm what is the density of
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