21) Equal masses of ice at 0°C and water at 100°C are mixed in an insulated container. Give a good estimate of the final temperature of the mixture. Your answer 22) How much heat energy would be needed to raise the temperature of a 15.0 g sample of iron [C= 0.448 J/(g°C)] from 22.0°C to 100.0°C? Your answer 23) What is the heat change when a 53.5 g sample of water [Cwater = 4.184 J/(g°C)] is cooled from 98.0°C to 23.2°C? Your answer 24) A 5.00 g sample of a brownie was burned in a bomb calorimeter containing 2025 g of water. The temperature of the water increased from 23.50°C to 33.47°C. How much heat, in joules, did the brownie release when it burned? [Cwater = 4.184 J/(g°C)]
21) Equal masses of ice at 0°C and water at 100°C are mixed in an insulated container. Give a good estimate of the final temperature of the mixture. Your answer 22) How much heat energy would be needed to raise the temperature of a 15.0 g sample of iron [C= 0.448 J/(g°C)] from 22.0°C to 100.0°C? Your answer 23) What is the heat change when a 53.5 g sample of water [Cwater = 4.184 J/(g°C)] is cooled from 98.0°C to 23.2°C? Your answer 24) A 5.00 g sample of a brownie was burned in a bomb calorimeter containing 2025 g of water. The temperature of the water increased from 23.50°C to 33.47°C. How much heat, in joules, did the brownie release when it burned? [Cwater = 4.184 J/(g°C)]
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 12E: An aluminum kettle weighs 1.05 kg. (a) What is the heat capacity of the kettle? (b) How much heat is...
Related questions
Concept explainers
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
SUBJECT : GENERAL CHEMISTRY 2
TOPIC : HEAT AND CALORIMETRY
NO NEED FOR SOLUTION JUST THE ANSWERS
![21) Equal masses of ice at 0°C and water at 100°C are mixed in an
insulated container. Give a good estimate of the final temperature of the
mixture.
Your answer
22) How much heat energy would be needed to raise the temperature of a
15.0 g sample of iron [C= 0.448 J/(g°C)] from 22.0°C to 100.0°C?
Your answer
23) What is the heat change when a 53.5 g sample of water [Cwater =
4.184 J/(g°C)] is cooled from 98.0°C to 23.2°C?
Your answer
24) A 5.00 g sample of a brownie was burned in a bomb calorimeter
containing 2025 g of water. The temperature of the water increased from
23.50°C to 33.47°C. How much heat, in joules, did the brownie release
when it burned? [Cwater = 4.184 J/(g°C)]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9f3351c3-9657-43f5-a3ee-8e68522de4c1%2F95672719-1d50-4ef9-89a8-ec792b91701c%2Fgrg3tsc_processed.png&w=3840&q=75)
Transcribed Image Text:21) Equal masses of ice at 0°C and water at 100°C are mixed in an
insulated container. Give a good estimate of the final temperature of the
mixture.
Your answer
22) How much heat energy would be needed to raise the temperature of a
15.0 g sample of iron [C= 0.448 J/(g°C)] from 22.0°C to 100.0°C?
Your answer
23) What is the heat change when a 53.5 g sample of water [Cwater =
4.184 J/(g°C)] is cooled from 98.0°C to 23.2°C?
Your answer
24) A 5.00 g sample of a brownie was burned in a bomb calorimeter
containing 2025 g of water. The temperature of the water increased from
23.50°C to 33.47°C. How much heat, in joules, did the brownie release
when it burned? [Cwater = 4.184 J/(g°C)]
Transcribed Image Text:20) A tetra pack of low-fat yogurt says it has 1.70 x 10^2 Calories. What is *
the equivalent amount of energy in units of joules? Express your answer in
scientific notation. Example scientific notation: 2.65 x 10^-7 J (This is
read as two point 75 times 10 raised to negative 7.)
Your answer
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
Living By Chemistry: First Edition Textbook
Chemistry
ISBN:
9781559539418
Author:
Angelica Stacy
Publisher:
MAC HIGHER
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781337399425
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
Living By Chemistry: First Edition Textbook
Chemistry
ISBN:
9781559539418
Author:
Angelica Stacy
Publisher:
MAC HIGHER
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781337399425
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning