Concept explainers
(a)
Interpretation:
The given power of
Concept introduction:
The numbers are written as the power of
(b)
Interpretation:
The given power of
Concept introduction:
The numbers are written as the power of
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Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
- Underline the significant zeros in the following numbers:(a) 0.41 (b) 0.041 (c) 0.0410 (d) 4.0100×104arrow_forwardRound 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_forwardPerform the following calculations and report each answer with the correct number of significant figures.(a) 628 × 342(b) (5.63 × 102) × (7.4 × 103)(c) (28.0)/(13.483)(d) 8119 × 0.000023(e) 14.98 + 27,340 + 84.7593(f) 42.7 + 0.259arrow_forward
- Give the name and symbol of the prefixes used with SI units to indicate multiplication by the following exact quantities.(a) 103(b) 10−2(c) 0.1(d) 10−3(e) 1,000,000(f) 0.000001arrow_forwardHow many significant figures are there in each of the following?(a) 81.0 ± 0.8 (b) 3.827 ✕ 109 (c) 2.94 ✕ 10−6 (d) 0.0015arrow_forwardPerform each of the following operations, using your calculator where possible:(a) Write the number 0.0054 in standard exponential notation. (b) (5.0 x 10-2) + (4.7 x 10-3) (c) (5.98 x 1012) (2.77 x 10-5) (d) 4√1.75 x 10-12arrow_forward
- Which of the following include exact numbers?(a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 2.99792×108 m/s.(b) The density of mercury at 25°C is 13.53 g/mL.(c) There are 3600 s in 1 h.(d) In 2010, the United States had 50 states.arrow_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 2.99792X10⁸m/s.(b) The density of mercury at 25°C is 13.53 g/mL.(c) There are 3600 s in 1 h.(d) In 2003, the United States had 50 states.arrow_forwardHow many significant figures are there in each number below? (a) 1.903 0 (b) 0.039 10 (c) 1.40 X 104arrow_forward
- Indicate the number of significant figures in the following measurements: (a) 9.07 g (b) 907.0 J (c) 9.1 L (d) 0.09070 kgarrow_forwardEvaluate each of the following mathematical expressions, and express the answer to the correct number of significant digits. (a) 45.3468 + 0.85 + 7.468 (b) 9.4458 + 3.7675 - 2.71 (c) 0.8294 + 0.217 + 4.96 (d) (7.611 + 9.81 + 3.6117) / 3.0arrow_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
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