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A product isolated from chlorination reaction had a known melating point of 200-202 degree . the students product is contaminated with 5% o a constitutional isomer. give the approximate expected melting point of the students product? expected melting point range? what factors did you need to consider when you predicted the melting point range abave be specific?
calculate the mass of a sample of copper that occupies 4.2* 10^-3 cm^3 if the density of gold is 8.94 g/cm^3.
A system had 150 kJ of work done on it and its internal energy increased by 60 kJ. How much energy did the system gain or lose as heat?
The distance between layers in a crystal is 281 pm. X rays are diffracted from these layers at an angle of 19.0°. Assuming that n = 1, calculate the wavelength of the X rays in nm.
The normal melting point of benzene is 5.5 degrees Celsius . For the process of freezing, what is the sign for each of the following
How many grams of salicylic acid and of acetic anyhydride should she use? refer to the following reaction: 2 C7H6O3 + C4H603 -> 2 C9H8O4 + H20
Einstein stated that the incident radiation had to have a minimum energy to dislodge the electron from the metal surface. This energy is called the work function.
How many grams of KNO2 must be added to 5.00 liters of 0.67 M HNO2 solution to produce a buffer with pH = 3.15?
2.58g of a gas has a volume of 3.97L at 745mmHg and 21 degrees celcius. What is the molecular weight of the gas?
Draw the structures of the byproducts of this type that would be derived from the reaction of the carbocation derived from 2-bromo2-methylbutane in ethanol.
how much acetone (CH3COCH3) would be needed to obtain 3.35 moles of acetone? the desnity of acetone is 0.851 g/mL.
Nitrogen and hydrogen combine at high temperature, in the presence of a catalyst, to produce ammonia. N2(g)+3H2(g)-->2NH3(g) Assume 4 molecules of nitrogen and 9 molecules of hydrogen are present.
Write down a balanced chemical equation for polymerization of a w-hydroxy carboxylic acid (HORCO2H)
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