What does it mean when a reaction is spontaneous

Consider four different samples: aqueous LiBr, molten LiBr, aqueous AgBr, and molten AgBr. Current run through each sample produces one of the following products at the cathode: solid lithium, solid silver, or hydrogen gas.

A measurement gave a mass of. 34kg. This is the same as 340g

Determine which change of state is being described in this passage. As the temperature decreases, the atoms lose energy. The atoms begin to move slower. They are held together by attractive forces, but are still able to slide past each other.

A fox spots a rabbit in a field. The fox begins to chase the rabbit, and the rabbit runs away. Which statement best describes the rabbit's behavior in response to the stimulus of being chased?

8. Ascorbic acid (Vitamin C) cannot be stored in the body, so it must be supplied in the diet. It is a C, H, O compound. If 7.75 g of Vitamin C is combusted in excess oxygen, it yields 11.62 g of CO2 and 3.17 g of water.

How many valence electrons does boron need to be stable?

What is the Bronsted-Lowry definition of a base?

When the skateboarder reaches the top of the half-pipe, what type of energy is at it's maximum?

Does anyone know any good science fair projects for 8th grade? It will mean a lot if u do! Need one asap

If a 1.50 L gas sample is held at a constant temperature, and its pressure is changed from 2.30 atm to 3.60 atm, what will the final volume be?