the spring of a toy car stores 10 j of potential energy. only 8 j of energy changes to kinetic energy as the car moves. what happens to the remaining 2 j of energy?

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103

What is the relation between concentration of reactants and the rate of chemical reaction?

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter