Find the mass of a sample of water if its temperature dropped 24. 8°C when it lost 870 J of heat. Hint. Which formula are you going to use? See

interactive PPT. Don't forget the unit. Show your work.

How much heat is required to warm a 135g cup of water from 15 °C to

35°C? Hint: the water is in a cup so what state of matter and specific heat?

Show your work.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

2b2t

explanation:

2b2t

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?