Select the correct answer. Which phrase best describes wave motion?
ОА.
movement of energy through space or a medium
OB.
movement of matter through space
ОС.
movement of energy within a particle
OD.
movement of air molecules through a medium
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Calculate the number of molecules present in 0.750 mol of mgo.

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons