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(a) use the fact that the intergral of [z^3/((e^z)-1)] dz = (pi^4)/15 to show that the total radiant energy emitted per second by unit area of a blackbody is ((2pi^5)*(k^4)*(T^4))/15(c^2)(h^3)
(b) the sun's diameter is 1.4E9m and its effective surface temperature is 5800K. Assume the sun is blackbody and estimate the rate of energy loss by radiation from the sun
(c) use E=mc^2 to calculate the relativistic mass of photons lost by radiation from the sun in 1 year
Use the valence bond thoery to determine whether the complex ion CoCl4^2- is a square planar or tetrahedral. measurements of its paramagnetism show that it has three unpaired electrons
Calculate the work associated with the compression of a gas from 121.0L to 80.0 L at constant pressure of 20.7 atm.
60.0 mL portion of of 1.70 M solution is diluted to a volume of 288 mili litres. A 144-mili litres portion of that solution is diluted using 115 mLili litres of H2O. Determine the final concentration.
If oxygen gas were collected over water at 22 C and the total pressure of the wet gas were 650 mm Hg, what would be the partial pressure of the oxygen?
As a bromine molecule approaches perpendicular to the negatively charged pi cloud of the carbon-carbon double bond, its bonding electrons are repelled away from the bromine atom nearer the double bond
What is the molarity of your NaOH solution? 2) You are given an impure sample of oxalic acid dihydrate (MW=126.068 g/mole) and asked to determine the percent of oxalic acid dihydrate present in the sample.
calculate the amount of heat(in kj) required to convert 94.6g of water to steam at 100 degrees celsius. (the molar heat of vaporization of water is 40.79 kj/mol)
The ultimate analysis of a coal is 80% carbon, 4% hydrogen, 2% oxygen, and the rest ash. The flue gases are 60 F and 14.7 psia (15.6 C and 101.3 KPa) when sampled and are 80%, nitrogen, 12% carbon dioxide
The effective nuclear charge is approximated as the total nuclear charge minus the number of core electrons. Thus, effectively, core electrons decrease the nuclear charge felt by the valence electrons because they are between the nucleus and the v..
How many grams of carbon dioxide are produced from the burning of 1,368 g of sucrose (C12H22O11) according to the following equation
Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?
The pH of an acid solution is 5.14. Calculate the Ka for the monoprotic acid. The initial acid concentration is 0.010M.
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