Scientific Notation and Significant Figures

Question 1

Question 1

Revolt · Accepted Answer

kg: 32,100; L: 0.000020

Question 2

Which number corresponds to the number in scientific notation?3.21 × 104 kg = 321✔ 32,1003,210,000 kg

Revolt · Accepted Answer

B: ✔ 32,100

Question 3

52,000,000 km = 1 ✔ 28 significant figures

Revolt · Accepted Answer

B: ✔ 2

Question 4

What rules should you follow when adding and subtracting? Check all that apply.

Revolt · Accepted Answer

B: The exponents need to be the same so the leading numbers can be added or subtracted.; C: The result has the same number of decimal places as the least precise number.

Question 5

Consider the following equation:0.0136 g + 2.70 × 10-4 g - 4.21 × 10-3 g = ?How many digits to the right of the decimal point should be used to report the result?

Revolt · Accepted Answer

2

Question 6

What rules should you follow when multiplying and dividing? Check all that apply.

Revolt · Accepted Answer

A: The exponents in scientific notation should be added when multiplying, and subtracted when dividing.; D: The result has the same number of significant figures as the number with the fewest significant figures.

Question 7

Consider this equation:2.524 g (5.1 × 106 g) ÷ (6.85 × 103 g) = ?How many significant figures should the result have?

Revolt · Accepted Answer

2

Question 8

2.0 × 10-5 L = 0.000002✔ 0.000020200,000 L

Revolt · Accepted Answer

B: ✔ 0.000020

Question 9

3,000. g = 13 ✔ 4 significant figures

Revolt · Accepted Answer

C: ✔ 4

Question 10

Choose the correct answer:

Revolt · Accepted Answer

B: 9.66 × 10-3 g

Scientific Notation and Significant Figures Answers

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