Assume a distant star functions as a blackbody at a
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W.
(a) What is the peak wavelength at which the star radiates?
(b) What is the radius of the star?
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A solution is prepared by measuring 33 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
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An x-ray photon of initial energy 50.0 keV Compton scatters from an electron that is initially at rest. find the wavelength of the back-scattered photon
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star
The initial temperature of the calorimeter is 23.0}C. If 7.20g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution\Delta H_soln of CaCl2 is -82.8 kJ/mol.
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Identify compound Z in the following sequence. (CH3)2CHCH2CN ---HCl, H2O, heat---> compound X ---1. LiAlH4, diethylether, 2. H20 ---> compound Y --- PCC, CH2Cl2 ------> compound Z 1. (CH3)2CHCH2COH (the O is double bonded to the C)
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