Per1_exercise - Answers to Period 1 Exercises E.1 The...

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Answers to Period 1 Exercises E.1 The British thermal unit (BTU) is a common unit of measurement for thermal energy. If one gallon of gasoline contains 126,000 BTU's, what is the energy content of 10 gallons of gasoline? a) 1.26 x 10 4 BTU's b) 1.26 x 10 5 BTU's c) 1.26 x 10 6 BTU's d) 1.26 x 10 7 BTU's e) 1.25 x 10 8 BTU's 126,000 = 1.26 x 10 5 1.26 x 10 5 BTUs x 10 gal = 1.26 10 6 BTUs 1 gal E.1 = c 1-Ex 1
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E.2 How much does the gasoline in each container cost per gallon? a) $1.00 for b) $10.00 for c) $7.00 for 0.75 gallons 8 gallons 5 gallons a) $1.00 = $1.33 0.75 gal 1 gal b) $10.00 = $1.25 8 gal 1 gal c) $7.00 = $1.40 5 gal 1 gal E.3 3 x 10 5 times 5 x 10 7 is between a) 10 10 and 10 11 b) 10 11 and 10 12 c) 10 12 and 10 13 d) 10 13 and 10 14 e) 10 14 and 10 15 3 x 10 5 times 5 x 10 7 = 15 x 10 12 = 1.5 x 10 13 E.3 = d between 10 13 and 10 14 because 10 13 = 1 x 10 13 and 10 14 = 1 x 10 14 = 10 x 10 13 1-Ex 2 & 3
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E.4 Which of the following expression(s) is/are correct? a)
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Per1_exercise - Answers to Period 1 Exercises E.1 The...

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