Question 1

How many significant figures does the number 46.000 contain?

Accepted Answer

5

Question 2

Convert $$6.15 	imes 10^4$ to standard notation.

Accepted Answer

61500.

Question 3

What is the correct answer to the calculation $$0.0954 	imes 2083$$, rounded to the correct number of significant figures?

Accepted Answer

39.5

Question 4

How many significant figures does the number $$2.10 	imes 10$$^{-3}$$ contain?

Accepted Answer

3

Question 5

How many significant figures does the number $$0.0011$$ contain?

Accepted Answer

2

Question 6

Perform the following calculation to the correct number of significant figures: $$\dfrac{64.10}{8.3}$$

Accepted Answer

7.7

Question 7

How many significant figures does the number 308 contain?

Accepted Answer

3

Question 8

What is the correct answer to this calculation, rounded to the correct number of significant figures: $$16.01 	imes \left(\dfrac{366.1}{381}ight)$$

Accepted Answer

15.4

Question 9

How many significant figures does the number 3468 contain?

Accepted Answer

4

Question 10

Which of the following numbers is the largest?

Accepted Answer

$$1.865 	imes 10^3$

Question 11

A laboratory technician records a mass as $$0.00322$$ grams. How many significant figures are in this measurement?

Accepted Answer

4

Question 12

Perform the following calculation to the correct number of significant figures: $$41.024 + 3.5 + 42.11$$

Accepted Answer

86.6

Question 13

A nurse needs to convert a medication dosage from scientific to standard notation. If the prescription reads $$2.5 	imes 10$$^{-2}$$ grams, what is this in standard notation?

Accepted Answer

0.025 g

Question 14

Which of the following numbers has the greatest number of significant figures?

Accepted Answer

4.500

Question 15

A student calculates the density of a liquid as $$1.2345 g/mL$$, but the balance used only measures to the nearest $$0.01 g. $$What is the density rounded to the correct number of significant figures?

Accepted Answer

Question 16

A solution contains $$3.20 	imes 10$$^{-5}$$ mol/L of a substance. What is this value in standard notation?

Accepted Answer

0.0000320 mol/L

Question 17

A patient’s blood sample is measured as $$0.00110 L. $$How many significant figures does this measurement have?

Accepted Answer

4

Question 18

Perform the following calculation to the correct number of significant figures: $$51 + 0.97$$

Accepted Answer

52

Question 19

A scientist multiplies $$3.2 	imes 1.51 	imes 2.934. $$What is the answer rounded to the correct number of significant figures?

Accepted Answer

14

Question 20

Which of the following best describes why trailing zeros in a number like 1200 are ambiguous in terms of significant figures?

Accepted Answer

They are only significant if a decimal point is present.

Significant Figures, Scientific Notation, and Calculations – Step-by-Step Guidance

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