You need 2.5 moles of aluminum for an experiment. How many atoms of aluminum is this?

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

Describe the interaction that occurs between two objects with the same electrical charge.