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Please answer the following and submit it on or before 12:30 tomorrow. 1. How much energy is removed to cool 75.0 grams of steam at 120.0°C to ice at -10.0°C. Express your answers in a) joules b) kilojoules (kJ) c) calories d) food Calories

Please answer the following and submit it on or before 12:30 tomorrow. 1. How much energy is removed to cool 75.0 grams of steam at 120.0°C to ice at -10.0°C. Express your answers in a) joules b) kilojoules (kJ) c) calories d) food Calories

Introduction to Chemical Engineering Thermodynamics
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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Thermochem Exercise. Please answer the following and submit it on or before 12:30 tomorrow. 1. How much energy is removed to cool 75.0 grams of steam at 120.0°C to ice at -10.0°C. Express your answers in a) joules b) kilojoules (kJ) c) calories d) food Calories 2. Water at 25°C with a density of 1 g/mL is mixed with 180.0 mL of coffee at 95°C such that the resulting mixture has a temperature of 60°C. How much water in mL is needed? Assume that coffee and water have the same density and specific heat = 4.184 J/g°C. 3. A certain chocolate bar contains 20.0 grams of fat. If 1.0 gram of fat is equivalent to 9.0 food Calories. How many joules of chemical energy is stored in the chocolate bar? 4. A 38 g sample of ice at -5°C is placed into 250 g of water at 65°C. Find the final temperature of the mixture assuming that the ice sample completely melts. 1 calorie = 4.184 J 1 food Calorie = 1000 calories 1 kJ = 1000 J
Transcribed Image Text:Thermochem Exercise. Please answer the following and submit it on or before 12:30 tomorrow. 1. How much energy is removed to cool 75.0 grams of steam at 120.0°C to ice at -10.0°C. Express your answers in a) joules b) kilojoules (kJ) c) calories d) food Calories 2. Water at 25°C with a density of 1 g/mL is mixed with 180.0 mL of coffee at 95°C such that the resulting mixture has a temperature of 60°C. How much water in mL is needed? Assume that coffee and water have the same density and specific heat = 4.184 J/g°C. 3. A certain chocolate bar contains 20.0 grams of fat. If 1.0 gram of fat is equivalent to 9.0 food Calories. How many joules of chemical energy is stored in the chocolate bar? 4. A 38 g sample of ice at -5°C is placed into 250 g of water at 65°C. Find the final temperature of the mixture assuming that the ice sample completely melts. 1 calorie = 4.184 J 1 food Calorie = 1000 calories 1 kJ = 1000 J
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