Silicon has a relatively large latent heat of vaporization of 12800 j/g. this indicates that silicon has:

How many neutrons does a atom of cobalt have?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?