#18: all atoms of the same element have the same a)number of neutrons b)atomic number

The most efficient way to establish the best possible economizer position is to measure

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.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.