Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Chapter 1, Problem 1.43P
Interpretation Introduction
Interpretation:Rule that states that zeroes are significant should be determined.
Concept introduction:Significant figures refer toeach digit in any number that is used to write specific number to desired accuracy. These figures include all non-zero digits available in number system. More the number of significant figures, higher will be the accuracy and certainty in measurement of particular number.
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Students have asked these similar questions
between significant digits are always significant.
figures.
Example: 5,007 has 4 significant figures.
3) Trailing zeros in a number are significant only If the
number contalns a decimal polnt.
Example: 100.0 has 4 significant figures.
100 has 1 significant figure.
4) Zeros in the beginning of a number whose only function
Is to place the decimal polnt are not significant.
Example: 0.0025 has 2 significant figures.
5) Zeros following a decimal significant figure are
significant.
Example: 0.000470 has 3 significant figures.
0.47000 has 5 signlficant figures.
Determine the number of significant figures in the following numbers.
1. 0.02
6. 5,000.
4.
2. 0.020
2.
7. 6,051.006
3. 501 3
8. 0.0005 1.
4. 501.0
9. 0.1020
5. 5,000
10. 10,001 5
Determine the location of the last significant place value by placing a bar over the digit.
Example: 1.700)
9,010.0
4.7x10-8
10,8 00,000
3.0Tx 1021
0.00410
1. 8040
6. 90,100
0.0300
699.5
2,000X162
0.90100
2. 0.0300
7. 4.7 x 108
3. 699.5
8. 10,800,000.
3.…
A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 74.1 ºC. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 ºC. What is her percent error?Record only your final answer with the correct number of significant digits and the proper units.
All nonzero digits are significant. State a rule that tells which zeros are significant.
Chapter 1 Solutions
Principles of General Chemistry
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