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Methyl alcohol, cyclohexane, isopropyl alcohol, and acetic acid are other solvents that are routinely used for TLC. Look up the dielectric constants and predict where these solvents would fit into the order of eluting ability.
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide.
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
Provide an explanation on why the methylene unit between the two carbonyl groups is more acidic than each of the methyl groups in acetylacetone. In the reaction conditions, what is the base responsible for the deprotonation of acetylacetone
Calculate the specific heat of a metallic element if 314 joules of heat energy are needed to raise the temperature of a 50.0 gram sample from 25 degrees celsius to 50 degrees celsius.
Calculate boiling point of a solution of 500.0 g of ethylene glycol dissolved in 500.0 g of water. kf = 1.86 c/m and kb = 0.512 c/m. Use 100 degrees celsius as the boiling point of water.
The vapor pressure of methanol at 30. oC is 158 torr. What mass (in grams) of methanol actually evaporates?
Lactase, an enzyme found in the small intestine, cleaves the milk sugar lactose to yield glucose and galactose. Assuming that the km for lactose is 0.9mM, vmax is 3.5 micromole/min/mg lactase, 5.7 micromoles lactose is presesnt
When 3.00 mol of benzene is vaporized at a constant pressure of 1.00 atm and at its normal boiling point of 80.1°C, 101.8 kJ are absorbed and P?V for the vaporization process is equal to 8.70 kJ then
Calculate the mass of sugar and salt in the original mixture. The other answer posted to the other time this questionw as posted seems to be incorrect.
Calculate the volume occupied by 1.00 mol N2 using the van der Waals equation in the form of a virial expansion at (a) its critical temperature, (b) its Boyle temperature, and (c) its inversion temperature
Heat realsed by combustion of ethyl ether, 1. In earlier times, ethyl ether was commonly used as an anesthetic. It is, however, highly flammable. When 5.0 mL of ethyl ether C4H10 (l), (d=0.714 g/mL) is burned in a bomb calorimeter
Give the number of d-electrons associated with the central metal ion in each of the following complexes: K3[Fe(CN)], [Mn(H2O)6](NO3)2, Na[Ag(CN)2], [Cr(NH3)4Br2]ClO4, [Sr(EDTA)]2-
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