When you're thirsty and want a glass of room temperature water (30 degrees Celsius) but your father turned on the "cool" button on your water dispenser, so instead of drinking that cold water (at 15 deg C), you take 50 mL of it, and add in 70 mL of hot water (at 40 deg C). Will this result in a drink warmer or cooler than the temperature you want? (assume density of water at 1g/mL for both temperatures; specific heat of water of 4.184 J/g*K; and all heat is contained. Clue: Find the final temperature and round off to two SF)
When you're thirsty and want a glass of room temperature water (30 degrees Celsius) but your father turned on the "cool" button on your water dispenser, so instead of drinking that cold water (at 15 deg C), you take 50 mL of it, and add in 70 mL of hot water (at 40 deg C). Will this result in a drink warmer or cooler than the temperature you want? (assume density of water at 1g/mL for both temperatures; specific heat of water of 4.184 J/g*K; and all heat is contained. Clue: Find the final temperature and round off to two SF)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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When you're thirsty and want a glass of room temperature water (30 degrees Celsius) but your father turned on the "cool" button on your water dispenser, so instead of drinking that cold water (at 15 deg C), you take 50 mL of it, and add in 70 mL of hot water (at 40 deg C). Will this result in a drink warmer or cooler than the temperature you want? (assume density of water at 1g/mL for both temperatures; specific heat of water of 4.184 J/g*K; and all heat is contained. Clue: Find the final temperature and round off to two SF)
Transcribed Image Text:O Exactly 30 deg C
Cooler by a few units
O warmer by a few units
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