James, Deborah, and Logan each purchase a cup of coffee. Each cup contains 350 grams of...
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James, Deborah, and Logan each purchase a cup of coffee. Each cup contains 350 grams of coffee at 95° C. The specific heat of coffee is 4.2 J/(g.C). The cups are well insulated so that no energy is transferred between the coffee and the cup. (a 10pts) James prefers to drink his coffee at 82° C. Cream has a specific heat of 3.8 J/(g-C) and an initial temperature of 5° C. How many grams of cream should he add to bring his coffee to the desired temperature? (b 10pts) Deborah likes to add sugar to her coffee. Sugar has a specific heat of 1.2 J/(g.C) and an initial temperature of 20° C. Deborah adds 16 grams of sugar to her coffee and stirs. By stirring the coffee, Deborah is doing 25 J of work on her coffee. What is the final temperature of the coffee after the liquid comes to rest? James, Deborah, and Logan each purchase a cup of coffee. Each cup contains 350 grams of coffee at 95° C. The specific heat of coffee is 4.2 J/(g.C). The cups are well insulated so that no energy is transferred between the coffee and the cup. (a 10pts) James prefers to drink his coffee at 82° C. Cream has a specific heat of 3.8 J/(g-C) and an initial temperature of 5° C. How many grams of cream should he add to bring his coffee to the desired temperature? (b 10pts) Deborah likes to add sugar to her coffee. Sugar has a specific heat of 1.2 J/(g.C) and an initial temperature of 20° C. Deborah adds 16 grams of sugar to her coffee and stirs. By stirring the coffee, Deborah is doing 25 J of work on her coffee. What is the final temperature of the coffee after the liquid comes to rest?
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a Heat lost by the coffee Heat gained by the cream Heat lost by the coffee Q1 M1 x C1 x ... View the full answer
Related Book For
Thermodynamics An Interactive Approach
ISBN: 978-0130351173
1st edition
Authors: Subrata Bhattacharjee
Posted Date:
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