CHEM 133 General Chemistry - American Military University

3/30/23, 5:02 PM : CHEM 133 Midterm Exam - CHEM133 K003 Summer 2022 - APEI


CHEM 133 Midterm Exam
Ashley Rodriguez (username: 5770021)

Attempt 1

Written: Sep 19, 2022 9:28 AM - Sep 19, 2022 12:26 PM


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Released: Sep 23, 2022 11:55 PM
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Question 1 points

The winner of the men's 1500-meter speed skating event at a recent Winter Olympics had a time of
1:45.57. Assuming that the distance was measured accurately to five significant figures, what was
the skater's average speed in miles per hour?

61.826 mi/hr

38.418 mi/hr

31.785 mi/hr

51.151 mi/hr


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Question 2 points

How many of the following numbers contain 3 significant figures?

0.105 6.010 0.0100 8.00 × 102

2

4

3

1


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, 3/30/23, 5:02 PM : CHEM 133 Midterm Exam - CHEM133 K003 Summer 2022 - APEI

Question 3 points

The melting point of picolinic acid is 136.5°C. What is the melting point of picolinic acid on the
Fahrenheit scale?

168.5 °F

409.5 °F

277.7 °F

107.8 °F

245.7 °F


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Question 4 points

How many significant figures are there in 0.3070 g?

3

2

6

4

5


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Question 5 points

Liquid nitrogen boils at –195.8°C. Express the boiling point of liquid nitrogen in kelvin.

469.0 K

77.4 K

all negative temperatures are 0 K on the Kelvin scale

–469.0 K

–77.4 K

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