chemistry

how many significant figures do the following numbers have?

a. 1.2056 x 10^4 m:
b. 1 x 10^89 km:
c. 12,000 L:
d. 0.000345 cm:
e. 1.00036 mL:
f. 0.2056000 m:

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asked by aira
  1. a. 1.2056 x 10^4 m: ==> 5
    b. 1 x 10^89 km: ==> 1
    c. 12,000 L: ==>2 Trailing 0's are significant if no decimal is present.
    d. 0.000345 cm: ==>3 Leading 0's are significant.
    e. 1.00036 mL:
    f. 0.2056000 m: ==> 7

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    posted by Devron
  2. Excuse the other posts.

    a. 1.2056 x 10^4 m: ==> 5
    b. 1 x 10^89 km: ==> 1
    c. 12,000 L: ==>2 Trailing 0's are not significant if no decimal is present.
    d. 0.000345 cm: ==>3 Leading 0's are not significant.
    e. 1.00036 mL: ==>6
    f. 0.2056000 m: ==> 7 Trailing 0's are significant when a decimal is present.

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    posted by Devron

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