A 50-g ice cube at 0C is heated until 45 g has become water at 100C and 5.0 g has become steam at 100C. How much energy was added to accomplish the transformation?
Notes 11/7 Earth Interior 1. Still has internal heating (partially molten core) 2. Differentiated: rock and metal are separated It means, separating substances with different densities in liquid or gas (must be free to move around to differentiate) Earth must have been completely molten long ago since it has differentiated Early sources of heat 1. Impacts (gravitational energy heat) 2. Differentiation (from gravitational energy) Current sources of heat 1. Radioactivity (U238) How old is the earth To find the age of a rock we need to know: 1. Current co