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Concept explainers
(a)
Interpretation:
The number
Concept Introduction:
Rules for rounding off numbers:
Rule 1: When the first digit after those that are wanted to retain is
Rule 2: When the first digit after those that are wanted to retain is
(b)
Interpretation:
The number
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The number
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The number
Concept Introduction:
Refer to part (a).
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Chapter 2 Solutions
FOUND.OF COLLEGE CHEMISTRY
- How many significant figures do the following numbers contain? (a) 1.233 + .1 (b) 1.233*.1 (c) 1.233/.01arrow_forwardHow many significant figures are there in each number below? (a) 1.903 0 (b) 0.039 10 (c) 1.40 X 104arrow_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
- 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_forwardConvert the following quantities into SI units with the correct number of significant figures. (a) 5.4 in (b) 66.31 lb (c) 0.5521 gal (d) 65 mi/harrow_forwardHow many significant figures are present in(a) 4.01 102(b) 8.256(c) 100arrow_forward
- Write the following numbers in standard notation. Use a ter-minal decimal point when needed:(a) 6.500*10^3(b) 3.46*10^5(c) 7.5*10^2(d) 1.8856*10^2arrow_forwardIndicate how many significant figures there are in (a) 0.305 0 (b) 0.003 050 (c) 1.003 X 104arrow_forwardHow many significant figures are there in each of the following? (a) 61.8 ± 0.1 (b) 3.407 x 10⁹ (c) 2.0400 x 10-6 (d) 0.0040 Need Help? Read Itarrow_forward
- Express the results of the following additions and subtractions to the proper number of significant figures. All of thenumbers are measured quantities.(a) 245.876+ 4.65+ 0.3678 =(b) 798.36 - 1005.7 + 129.652 =(c) 7.98 × 1017 + 6.472 × 1019 =(d) (4.32 × 10-15) - (6.257 × 10-14) - (2.136 × 10-13) =arrow_forward(a) How many picometers are there in 1 m? (b) Express6.0 * 103 m using a prefix to replace the power of ten.(c) Use exponential notation to express 4.22 mg in grams.(d) Use decimal notation to express 4.22 mg in grams.arrow_forwardPerform the following calculations and report each answer with the correct number of significant figures. (a) 635 ✕ 335 (b) (5.23 ✕ 102) ✕ (6.8 ✕ 103) (c) 27.2/13.383 (d) 8179 ✕ 0.000051 (e) 14.23 + 27360 + 84.5721 (f) 47.2 + 0.291arrow_forward
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