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What is the wavelength (in meters) of photons with the following energies? In what region of the electromagnetic spectrum does each appear?
The sodium hydroxide solution was prepared by dissolving 10.00 g of solid NaOH in sufficient water to form 200.00 mL of solution. If the equivalence point was reached after the addition of 23.50 mL of the NaOH solution, what is the molarity of HNO..
What mass of solid sodium hypochlorite (molar mass = 74.44 g/mol) should be added to 1.0 L of 0.255M hypochlorous acid to make a buffer with a pH of 7.54? (Ka of HClO = 3.8 x 10-8)
Explain how you would prepare 500.0mL of a solution that is 0.100M H2SO4 from concentrated 18.0M H2SO4, which is a liquid density 1.82 g/mL.
the activation energy for the decomposition of hydrogen peroxide is 43 kjmol whereas when the reaction is catalyzed by
The lid is tightly sealed on an empty 2.0L soda bottle at 25.0 degrees Celsius and 732 mm Hg. If the bottle is heated to 100.0 degrees Celsius, what is the pressure in the bottle?
Combining aqueous solutions of BaI2 and Na2SO4 gives a precipitate. Which ion(s) is/are spectator ions in the reaction
Write the acid/base equilibrium reaction (net-ionic) for the major species present in an aqueous solution of each of the following substances. Include aggregation states. Note that this text uses H3O+.
a set of data gave an average unpopped corn kernel mass of 0.12 grams. how many kernels are in a pound 454 g of
A student placed 18.0 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mark on the neck of the flask was reached.
a star is estimated to have a mass of 1x1036 kg. assuming it to be a sphere of average radius 7.5x105 km calculate the
We irridate an unknown atomic system, in the gas phase, with monochromatic UV radiation of wavelength 0.605x10^-7m and observe a sharp absorption line. All other absorption lines have higher wavelength.
A bottle containing 350 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
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