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Concept explainers
(a)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Significant figures: The digits that are measured in a number including one estimated digit are called as significant figures.
The answers for those calculations that involve multiplication and division will have the same number of significant figures as the original number with the fewest number of significant figures.
(b)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Significant figures: The digits that are measured in a number including one estimated digit are called as significant figures.
The answers for those calculations that involve addition and subtraction will have the same number of decimal places as the original number with the fewest decimal places.
(e)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Refer to part (d).
(f)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Refer to part (a).
(g)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Refer to part (d).
(h)
Interpretation:
The number of significant figures present in the answer of
Concept Introduction:
Refer to part (d).
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Chapter 2 Solutions
FOUND.OF COLLEGE CHEMISTRY
- For Q7. I am confused on why the answer Is 39 instead of 39.11. Please helparrow_forwardWrite 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_forwardExpress 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
- 21. Solve the following problems, stating answers to the proper number of significant figures: (a) 12.62 +1.5 +0.25 = ? (b) (2.25 x 10³) (4.80 x 10) = ? (452)(6.2) (c) 14.3 (d) (0.0394)(12.8) = ? 0.4278 (e) 59.6 (f) 10.4 +3.75(1.5 × 10) = ? S ? = ?arrow_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_forward2. Report the answers of these calculations to the correct number of significant figures: (a) 5.354 x 4.812 x 6.8312 = ? (b) 29.4464 + 10.395 +5.20853= ? (c) (5.7268 x 10¹) (6.9 x 10¹0)/1.0= ? (Report answer in exponential notation.)arrow_forward
- Underline the significant zeros in the following numbers:(a) 0.41 (b) 0.041 (c) 0.0410 (d) 4.0100×104arrow_forwardHow many significant figures are there in each number below? (a) 1.903 0 (b) 0.039 10 (c) 1.40 X 104arrow_forward1) A 1.728 in' of a substance has a mass of 36 grams. What is the density of the substance in g/cm'? (1 inch= 2.54 cm) (a) 21 (b) 5.6 (c) 30, (d) 14 (e) 1.3arrow_forward
- 3) Multiply 6.4 x 10^-3 times 8.0 x 10^7 and express the answer in scientific notation.(a) 5.1 x 10^-21(b) 5.1 x 10^–3(c) 5.1 x 10^3(d) 5.1 x 10^4(e) 5.1 x 10^5 Step by step 4) Round off the following measurement to three significant digits: 14,546 cm.(a) 145 cm (b) 146 cm(c) 14,500 cm (d) 14,600 cm(e) 15,000 cm Step by steparrow_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_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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