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Describe the various forms of energy that are interconverted when a flashlight is switched on.

The chapter states that enthalpy is an extensive property. Why? Describe a situation that illustrates this fact.

Describe the forms of energy that are interconverted when the space shuttle lifts off.

The enthalpy of a system is affected by the physical states of the reactants and the products. Explain why.

Categorize each of the following as representing kinetic energy or potential energy. a. the energy associated with a laptop computer sitting on the edge of a desk b. shoveling snow c. Water pouring out of a fire hydrant d. the energy released by an earthquake e. the energy in a volcano about to erupt f. the energy associated with a coiled spring

Are the units for potential energy the same as the units for kinetic energy? Can an absolute value for potential energy be obtained? Explain your answer.

Is the distance a person travels on a trip a state function? Why or why not?

Describe how Hess's law can be used to calculate the enthalpy change of a reaction that cannot be observed directly.

Categorize each of the following as representing kinetic energy or potential energy. a. Water cascading over Niagara Falls b. a beaker balanced on the edge of a sink c. the energy released during a mudslide d. rollerblading e. the energy in a block of ice on a rooftop before a thaw

Why does hammering a piece of sheet metal cause the metal to heat up?