Part 1 : does the diagram illustrate an endothermic or exothermic reaction? Give reasons to support your answer.

Part 2: Use the labels on the diagram to describe how you can determine he total change in enthalpy from the diagram. Would you expect the value to be negative or positive?

it takes on an electronical energy

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?

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.