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Microwave ovens work by irradiating food with microwave radiation, which is absorbed and converted into heat.
Assuming that radiation with ?=15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 ^0C , how many photons are necessary to raise the temperature of a 350 mL cup of water from 25 ^0C to 95 ^0C?
The empirical formula of a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. The molar mass of lindane is 290.8. How many atoms of carbon does a molecule of lindane contain
as ph decreases h increases and solubility increases. the effect of ph on solubility is dramatic. a saturated solution
the molar enthalpy of formation for nitrogen dioxide is +33.18 kj/mol. the chemical equation that corresponds to this value of (delta)Hf is
Select all of the correct statements about reaction quotients and equilibrium constants from the choices below. A reaction quotient equals the equilibrium constant at equilibrium.
If a molecule will form a secondary carbocation after withdrawal of the leaving group, does that favor Sn1 (formation of the carbocation intermediate) or Sn2 (straight to the products)
A 4.0L sample of air collected at 298 K and then cooled to 278F while held at constant pressure. What is the new volume of the air
Why did the grape juice change color when an acid or base was added. 5. You added a base, sodium bicarbonate, to test tube 1 that contained citric acid and an acid to test tube 2 that contained base.
suppose a can contains gas at a pressure of 755 mm hg and a temperature of 25 degrees celsius what would be the
Calculate the binding energy for Cf-253 if one atom of this nuclide has an atomic mass of 253.08249. Express your answer in units of picojoules/nucleus where 1 picojoule = 1x10-12 joule.
Using your data, determine two values for (delta)H neutralization, then calculate an average value. The value should be determined and reported as "Molar Enthalpy of Neutralization of HCL", with units of kJ/mole HCL.
Carbon-carbon single bonds in organic molecules have energies about 350 kj/mol. What is the corresponding wavelength.
In 1989, the Exxon Valdez ran aground and spilled 240,000 barrels of crude oil off the coast of Alaska, leaving a 0.5 mm thick layer of oil covering the waters of Prince William Sound. Using the conversion factors given below, determine the area o..
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