Which statement best compares the properties of compounds and elements that the compounds contain? a. they are always identical. b. they are different. c. they are similar. d. they represent opposite characteristics.

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

How to convert a density of 0.791g/cm3 to lb/ft3

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