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An ideal gas described by Ti = 300. K, Pi = 1.00 bar and Vi = 10.0 L is heated at constant volume until P = 10.0 bar. It then undergoes a reversible isothermal expansion until P = 1.00 bar. It is then restored to its original state by the extraction of heat at constant pressure. Depict this closed-?cycle process in a P-?V diagram. Calculate w for each step and for the total process. What values for w would you calculate if the cycle were traversed on the opposite direction?
Element Z has two naturally occurring isotopes Z-79 ( 78.918 amu) and Z-81 (80.916 amu) . Calculate the atomic mass of element Z given the abundance of the Z-81 is 49.31 %
Semiconductors, such as silicon, are the heart of the circuits that form the basis for computers and other electronics. These materials are characterized by a gap in the energy
Calculate the pH for the titration of 20mL of .75M formic acid (HCOOH) Ka(HCOOH) = 1.8e-4, with .2M KOH. a) Before any acid is added
In which of the following would the bonding be weakened with the addition of an electron to form the negative molecular ion?
Minimal energy cost of H2S conversion to hydrogen and sulfur in gliding-arc is 1.6 eV/molec
Suppose that the microwave radiation has a wavelength of 10.8 . How many photons are required to heat 205 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this tem..
An excess sample of solid Ag2SO3 is added to 100 mL of water. After equilibrium is achieved between the solid and its aqueous ions the silver ion concentration is found
carbon disulfide can b made by the reaction of carbon dioxide and sulfur trioxide 2so3(g) + Co2(g) + heat >
What is the molar volume of the oxygen gas at the conditions in the laboratory?
How many liters of NO(g) are produced when 0.85L of 2.00M HNO3 solution is added to 216 of Ag according to the equation. Which reactant is the limiting reactant?
Update the backbone to properly show a tripeptide, and add side chains and hydrogen atoms to show Gly-Phe-Tyr.
A 30.0 mL sample of a diprotic acid is titrated with 0.255 M KOH. If 59.5 mL of base is required to reach the second equivalence point
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