How does light travel through a solid, liquid, gas, and a vacuum?

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Calculate the number of moles of ethane in 100 grams