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A process involves the performance of electrical work in the amount w' on a system. Show that if the process is carried out
a. at constant volume, the heat absorbed is delta U-w'
b. at constant pressure, the heat absorbed is delta H-w'
c. adiabatically, the pressure-volume work done is delta U-w'
What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds
An unknown gas composed of a diatomic molecule effuses at a rate that is only 0.355 times as fast as that of oxygen gas at the same temperature.
At 450 K the rate constant is 15.4 atm-1s-1. How much time (in s) is needed for NOCl originally at a partial pressure of 46 torr to decay to 25.8 torr?
Codeine, C18H21NO3, a commonly prescribed painkiller, is a weak base. A saturated aqueous solution contains 1.00 g codeine in 120 mL of solution and has a pH = 9.8. What is the Kb of codeine?
at 30 km above the earths surface (roughly in the middle of the statosphere) the pressure is roughly 0.013 atm and the gas density is 3.74 x 10^23 molecules/m^3 assuming N2 is represetative of the stratosphere using the collisional diameter inform..
what simple test would you use to identify the possible presence of HCl (aq)? what result do you expect if the solution is HCl (aq)?
a 125 g sample of an unknown metal requires 1351 j of energy to heat it from 25 degrees celcius to 112 degrees celcius. what is the specific heat capacity of the unknown metal.
What is the strongest base that may exist in water. What happens to stronger bases
What is the nickel ion concentration in a solution prepared by mixing 451 mL of 0.414 M nickel nitrate with 465 mL of 0.364 M sodium hydroxide?
M+ is added to a solution of 0.0035 M X- and 0.0016 M Z-. MX has Ksp = 8.2 × 10^-9, while MZ has Ksp = 1.7 × 10^-10. What percentage of the Z- is still in solution (not precipitated) when the MX just starts to precipitate? Answer in units of %.
Calculate the pH for an aqueous solution of acetic acid that contains 3.15 × 10-3 M hydronium ion.
A block of metal has a width of 3.2 , a length of 17.1 , and height of 4.2 . Its mass is 1.5 . Calculate the density of the metal.
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