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A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz ({\rm MHz}), where 1\; {\rm MHz}=10^6\; {\rm Hz}. Calculate the broadcast wavelength of the radio station 92.30 FM.
the photoelectric effect is used today to make light-sensitive detectors when light hits a sample of metal in a sealed
A 13.00 g sample of an ionic compound NaA, where A- is the anion of a weak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with 0.100 M HCl.
consider one of the resonance structures of the nitrate ionno3oline. what is the formal charge of one of the oxygen
octane has a density of 0.692g/ml at 20C. How many grams of O2 are required to burn 30.5 gal of C8H18
Penicillase is an enzyme secreted by bacteria to inactivate the antibiotic penicillin. The enzyme has a molar mass of 30,000 and a single active site. The catalytic rate constant is 2000 s-1 and the Michaelis constant is KM = 5 x 10-5 M.
2- hexanone and 4 - methyl-2-pentanone are isomers, thus their molecular weights are equal. What are some reasons why their boiling point and GC retention time is different
100.0 ml solution that was made by adding 10.26 grams of sucrose c12h22o11 to 95.0 ml of pure water density of pure
A gas expands and does P-V work on the surroundings equal to 337 J. At the same time, it absorbs 177 J of heat from the surroundings. Calculate the change in energy of the gas.
a solution contains a mixture of pentane and hexane at room temperature. the solution has a vapor pressure of 268 rm
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO
If the following reaction occurs, then what temperature will the water reach, assuming that the cup is a perfect insulator and that the cup absorbs only a negligible amount of heat
A 0.01 M solution of hyperchlorous acid , which is a monoprotic acid, has a pH of 6.5 at 67 degrees C. Determine the Ka value of this acid.
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