What is the major cause of the earth’s magnetic field?
magnetic materials on the earth’s surface
charged particles from the sun
the earth’s magnetic lithosphere
the earth’s liquid outer core

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction