Constants | Periodic Table Part A A person packs two identical coolers for a pic
ID: 715424 • Letter: C
Question
Constants | Periodic Table Part A A person packs two identical coolers for a picnic, placing twenty-four 12-ounce soft drinks and 5 pounds of ice in each. However, the drinks put into cooler A were refrigerated for several hours before they were packed in the cooler, while the drinks put into cooler B were at room temperature. When the picnickers open the two coolers three hours later, most of the ice in cooler A is still Explain the difference. This difference can be explained by the different composition of the drinks When warm drinks are placed into the ice, they release heat which then melts the ice. The pre-chilled drinks are already cold so they do not release much heat and do not melt the ice present, while neary all of the ice in cooler B has melted When both drinks are placed into the ice, they release heat which then melts the ice in both coolers. But in cooler A the drinks are pre-chilled so they can absorb heat back and cool water back to ice The ice would melt in both coolers anyway because three hours is enough time to melt 5 pounds of ice. So in cooler B both drinks and water will be at room temperature. But in cooler A the temperature of pre-cooled drinks is lower than the room temperature, they will absorb heat from water and freeze it. SubmitExplanation / Answer
The correct answer is the second option. As drinks in cooler A were pre-refrigerated, there is no much difference in temperature between drinks and ice, so not much energy will be taken from ICE, which ends in it not melting completely. On cooler B, however, drinks are at room temperature, and require much more energy to reach equilibrium with Ice, which ends in all ice melting.