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Current: 1,500 watts Time: 2 hours Kilowatt-hours? How do I solve these? Calculate the volume, in liters, of 3.24 x 10^22 molecules cl2 (STP)? What is the charge of an ion that has 38 protons and 36 electrons? Verifique se as retas r: x + 3y - 4 = 0 e s: x - 2y + 2 = 0 são paraleleas ou concorrentes. Justifique? Probability and Expected Value Question?