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

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

65uuyhjghj8ykitdyidii

its first and third is your answer i did the qustion the fourth isnt right

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.