An electron in an atom is in the n = 3 and ell = 1 quantum level. (a) Select the possible values of mell that it can have. mell = −2, −1, 0, 1, 2 mell = −1, 0, 1 mell = 0, 1 mell = 0, 1, 2, 3 (b) What are all of the possible values of ell at n = 3? ell = 0, 1, 2, 3 ell = −2, −1, 0, 1, 2 ell = −3, −2, −1, 0, 1, 2, 3 ell = 0, 1, 2

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?