Concept explainers
(a)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non- zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
(b)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non- zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
(c)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non- zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
(d)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non- zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
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Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
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- Round off each of the following numbers to two significant figures:(a) 0.436(b) 9.000(c) 27.2(d) 135(e) 1.497 × 10−3(f) 0.445arrow_forwardHow many significant figures are there in each number below? (a) 1.903 0 (b) 0.039 10 (c) 1.40 X 104arrow_forwardWhich of the following include exact numbers? (a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 2.99792x108 m/s. (b) The density of mercury at 25oC is 13.53 g/mL. (c) There are 3600 s in 1 h. (d) In 2012, the United States had 50 states.arrow_forward
- Indicate how many significant figures there are in (a) 0.305 0 (b) 0.003 050 (c) 1.003 X 104arrow_forwardCalculate each of the following expressions, giving youranswers the proper numbers of significant figures.(a) log (3.56 × 104)(b) e-15.69(c) 108.41(d) ln (6.893 × 10-22)arrow_forwardBe sure to answer all parts. Carry out the following operations as if they were calculations of experimental results and express each answer in standard notation with the correct number of significant figures and with the correct units. Enter both the answer and the units in the answer field. (a) 7.2129 m + 0.6 m + 4.33 m (b) 3.70 g-4.0933 g (c) 4.51 cm x 5.9233 cmarrow_forward
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