Carry out the following calculation. Express the results in scientific notation and with the correct number ots 3.01e22 atoms + 1.19e23 atoms + 9.80e21 atoms =
atoms
Do not include units.

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory