Question #1: Describe how significant digits in a measurement can indicate the precision of the instrument used to take the measurement.
Answer: The measurements recorded should include all the numbers that are known with certainty plus one digit (the rightmost digit) that is estimated. Thus, significant digits clearly show the precision of the instrument used.
Question #2: Determine how many significant digits are in the following numbers: a. 20.009 b. 0.00876 c. 45.000
d. 34500 e. 234.614
Answer:
a. Five
b. Three
c. Five
d. Three
e. Six
Are they right? Thanks for your help!
2007-07-19
04:29:40
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4 answers
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asked by
Steven M
3
in
Science & Mathematics
➔ Chemistry