Treatment for a stroke. One suggested treatment for a person who has suffered a stroke is to immerse the patient in an ice-water bath at 0°C to lower the body temperature, which prevents damage to the brain. In one set of tests, patients were cooled until their internal temperature reached 32.0°C. To treat a 70.0 kg patient, what is the minimum amount of ice (at 0°C) that you need in the bath so that its temperature remains at 0°C? The specific heat of the human body is 3480 J/(kg·C°), and recall that normal body temperature is 37.0°C.
Treatment for a stroke. One suggested treatment for a person who has suffered a stroke is to immerse the patient in an ice-water bath at 0°C to lower the body temperature, which prevents damage to the brain. In one set of tests, patients were cooled until their internal temperature reached 32.0°C. To treat a 70.0 kg patient, what is the minimum amount of ice (at 0°C) that you need in the bath so that its temperature remains at 0°C? The specific heat of the human body is 3480 J/(kg·C°), and recall that normal body temperature is 37.0°C.
Treatment for a stroke. One suggested treatment for a person who has suffered a stroke is to immerse the patient in an ice-water bath at 0°C to lower the body temperature, which prevents damage to the brain. In one set of tests, patients were cooled until their internal temperature reached 32.0°C. To treat a 70.0 kg patient, what is the minimum amount of ice (at 0°C) that you need in the bath so that its temperature remains at 0°C? The specific heat of the human body is 3480 J/(kg·C°), and recall that normal body temperature is 37.0°C.
A glass coffee pot has a 9.00 cm diameter circular bottom in contact with a heating element that keeps the coffee warm with a continuous 50.0-W heat input.
(a) What is the temperature of the bottom of the pot, if it is 2.90 mm thick and the inside temperature is 67.8°C? The thermal conductivity of the pot is 0.84 J/(s · m · °C). *Answer in °C, please
You drop an ice cube into an insulated flask full of water and wait for the ice cube to completely melt. The ice cube initially has a mass of 90.0 g and a temperature of 0°C. The water (before the ice cube is added) has a mass of 850 g and an initial temperature of 22.0°C. What is the final temperature (in °C) of the mixture? (Assume no energy is lost to the walls of the flask, or to the environment.)
°C
While hanging out in Lab, you decide to conduct another calorimetry experiment, but this time, you want to do it on a bit larger scale. You place 3.8 kg of water in a large aluminum can that has a mass of 15 kg. You heat the water and can up to an initial temperature of 80◦ C, and then slowly add 400 g of ice that has an initial temperature of −10◦ C. You stir the ice and water until all of the ice melts, and the system comes to an equilibrium temperature of 32◦ C. You feel good about things until you realize that you did not cover the aluminum can and that some heat was lost to the environment during the experiment. Use the information provided to calculate the amount of heat that was lost to the environment.
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