An electron is present at an energy level with an energy of 16.32 x 10−19 j. during a transition to another level, 5.4 x 10−19 j of energy was absorbed. which of the following is true about the present state of the electron? the electron moved down to an energy level and has an energy of 10.92 x 10−19 j. the electron moved down to an energy level and has an energy of 21.72 x 10−19 j. the electron moved up to an energy level and has an energy of 10.92 x 10−19 j. the electron moved up to an energy level and has an energy of 21.72 x 10−19 j.

Identify which properties could correspond to solids, plasmas, or both. maintain a unique shape. collide infrequently with other particles. have very high velocities. conduct electricity. protons. have a low temperature. has long-range order.

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

How far is the region from the equator or control climate