Calculate the number of oxygen atoms in a 90.0 g sample of dinitrogen tetroxide (N204).

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

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.

Which are forms of frozen water? check all that apply. dew frost hail rain sleet