How many kilowatt-hours of electricity are used to produce 4.00 kg of magnesium in the electrolysis of molten MgCl2 with an applied emf of 4.50 V

What role does weathering have in shaping earth’s surface? a) it allows sediments to fall out of a medium. b) it sediments settle on a new surface. c) it breaks down older material into sediments. d) it transports sediments to a different location. will give brainliest, answer quickly.