Please help me with chemistry. ​

What is the mass of 8 moles of sodium atoms

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

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.