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defon
3 years ago
13

If a person has a dangerously high fever, submerging her in ice water is a bad idea, but an ice pack can help to quickly bring h

er body temperature down.
How many grams of ice at 0 degrees C will be melted in bringing down a 62kg patient's fever from 40 degrees C to 39 degrees C?
Physics
1 answer:
Elenna [48]3 years ago
7 0

Answer:

775 grams of ice

Explanation:

Heat loss by patient = heat gained by ice

Heat loss by patient = mass×specific heat capacity×(initial temperature - final temperature) = 62×4200×(40-39) = 260,400J

Heat gained by ice = mass × specific latent heat of fusion of ice = m×336000 = 336000m J

336000m = 260,400

m = 260400/336000 = 0.775kg = 0.775×1000 grams = 775 grams of ice

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