Which statement is correct for a plant cell? O A plant cell membrane forms a thick wall.
O A plant cell does not have a cell membrane,
O The cell membrane is inside the cell wall,
O The cell membrane is outside the cell wall,

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.

Matches the chemical name of each oxide of phosphorus to its chemical formula

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms