How many moles is 4.98x1028 molecules of NaBr?

__can be defined as which velocity changes

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

What volume would 2.25 moles of ne has occupy at stp?