Is this Lewis structure correct? Check weather each atom has an octet whether the total valence electrons in the structure match the valence electrons of the elements?

What is impossible to do with a hypothesis

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

What is the subscript for oxygen in its molecular formula