A sports trainer applies an ice bag to an athlete’s shoulder. Calculate the heat absorbed by the ice bag if there are 140 grams of ice at 0.0 °C, and raises to body temperature 37.0 °C. Give your answer in kilocalories (kcal).

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?