March 18th activity.pdf - Thermochemistry Workshop Activity...

Thermochemistry Workshop Activity - March 18th
Due: 12:00am on Saturday, May 15, 2021
To understand how points are awarded, read the Grading Policy for this assignment.
Exercise 7.35 - Enhanced - with Feedback
MISSED THIS? Read Section 7.2 ( Pages 264 - 266 )
Suppose that a person eats a diet of 2386 Calories per day.
Part A
Convert this energy into joules.
Express your answer using four significant figures.
.
Thermochemistry Workshop Activity - March 18th
...
Part B
Convert this energy into kilojoules.
Express your answer using four significant figures.
Part C
Convert this energy into kilowatt-hours.
Express your answer using four significant figures.
Use the equality to convert Calories to joules, then convert joules to kilowatt-hours using as a conversion
factor.
Exercise 7.37 - Enhanced - with Feedback
1 of 22
3/18/2021, 12:50 PM

MISSED THIS? Read Section 7.3 ( Pages 267 - 272 ) . Watch KCV 7.3 .
Part A
Which of the following is true of the internal energy of a system and its surroundings during an energy exchange with a negative
ANSWER:
Δ E
sys
?
Correct
A negative indicates energy is lost from the reactants and gained by the surroundings. The same amount of energy that is lost by the system
is gained by the surroundings.
Exercise 7.39 - Enhanced - with Feedback and Hints
MISSED THIS? Read Section 7.3 ( Pages 267 - 272 ) . Watch KCV 7.3 .
Part A
Identify energy exchanges as primarily heat or work.
Drag the items into the appropriate bins.
Hint 1. Define heat and work
A system can exchange energy with the surroundings through heat and work. To identify which parameters are associated with each, start by defining
the terms.
Match the words in the left column to the appropriate blanks in the sentences on the right.
ANSWER:
ANSWER: