2. what happens when an electron returns to
its ground state from its excited state?

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

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.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?