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2 February, 02:28

How many significant figures are contained in each of the following measurements?

(a) 53 cm

(b) 2.05 x108 m

(c) 86,002J

(d) 9.740 x 104 m/s

(e) 10.0613 m3

(f) 0.17 g/mL

(g) 0.88400 s

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Answers (2)
  1. 2 February, 03:16
    0
    (a) 53 cm - -> 2 significant figures.

    (b) 2.05 x10² m - -> 3 significant figures.

    (c) 86,002J - -> 5 significant figures.

    (d) 9.740 x 10⁴ m/s - -> 4 significant figures.

    (e) 10.0613 m³ - -> 6 significant figures.

    (f) 0.17 g/mL - -> 2 significant figures.

    (g) 0.88400 s - -> 5 significant figures.

    Explanation:

    Hello,

    By considering the following widely rules to determine a measurement's significant figures:

    1. Non-zero digits are always taken as significant.

    2. All zeros between two significant digits are taken as significant.

    3. A final zero or trailing zeros in the decimal portion ONLY are significant.

    The significant figures of each case are provided as shown below:

    (a) 53 cm - -> 2 significant figures.

    (b) 2.05 x10² m - -> 3 significant figures.

    (c) 86,002J - -> 5 significant figures.

    (d) 9.740 x 10⁴ m/s - -> 4 significant figures.

    (e) 10.0613 m³ - -> 6 significant figures.

    (f) 0.17 g/mL - -> 2 significant figures.

    (g) 0.88400 s - -> 5 significant figures.

    Best regards.
  2. 2 February, 04:06
    0
    A) 2

    B) 3

    C) 5

    D) 4

    E) 6

    F) 2

    G) 5
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