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Introduction to Chemistry
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Introduction to Chemistry Midterm - Part 1 of 3
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Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15
Problem 16
Problem 17
Problem 18
Problem 19
Problem 20
Problem 21
Problem 22
Introduction to Chemistry Midterm - Part 1 of 3
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3. Matter and Energy / First Law of Thermodynamics / Problem 20
Problem 20
A system absorbs 50 J of heat and does 20 J of work on its surroundings. What is the change in internal energy?
A
-70 J
B
30 J
C
-30 J
D
70 J
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