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Strong sunshine bombards the earth with about 1kjm^-2 in 1s. Calculate the maximum mass of pure ethanol that can be vaporized in 10 min from a beaker left in strong sunshine, assuming that the surface area of the ethanol to be 50 cm^2. Assume that all the heat is used for vaporization, not to increase the temperature.
A vitamin tablet contains 501 mg of vitamin C (C6H8O6). How many vitamin C molecules are contained in the tablet?
using a nitrogen gas sample in a container with capacity 1.64 litres a pressure of 121 atm is exerted by this gas
approximately what percentage of the acetic acid molecules are protonated and neutral in charge at pH 5.7?
a strip of mg of mass 15g is dropped into a beaker of dilute hcl. determine the work done by the evolution of h2 in the
Explain what is meant by Chousekeeping gene and why the gene for enolase is not considered a housekeeping gene despite it being expressed in all tissues.
How many electrons has a titanium atom lose if it has formed the ion Ti^4+. What are the total number of protons and electrons in a Ti^4+ ion
What is the wavelength of an electron traveling with a velocity of 7.0 times 10 to the 3rd power?
why is an acetyl group added to aniline making acetanilide and then removed to regenerate the amine group in
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
The reactions represented below are all spoontaneous as written. For each, write the anode and cathode half - reactions and indicate the signs of the electrodes.
Calculate the energy difference (E) for the transition from n = 1 to n = 4 energy levels of hydrogen per 1 mol of H atoms.
according to le chacircteliers principle a system at equilibrium will respond to a stress by shifting in the direction
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