Find the metal bar (show your work) Thickness: 0.086 cm
Length: 12.70 cm
Width: 2.00 cm
Mass: 19.40 g

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.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?