What is the mass of 1 mol of Ca atoms to three significant Figures of CaSO4

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.

How many moles of al3+ ions are in 1.25 moles of al2o3

Is 9 correct? and can someone me with 10? it’s due tomorrow, you