Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O

Afamily is one another name for a group on the table of elements.

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

The element that has the greatest electronegativity is