Interpretation:
To predict significant digit number in the given mass of
Concept Introduction:
The significant numbers are taken by counting the digits from left to right and starting by the first non-zero digit. The process of eliminating the non-significant digit is known as the rounding off. This rounding off follows three rules which are stated below as:
Rule 1: If the 1st non-significant digit is less than
Rule 2: If the 1st non-significant digit is equal to or greater than
Rule 3: In a multistep calculation the non-significant digits are taken in all the steps.
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EP INTRODUCTORY CHEM.-MOD.MASTERINGCHEM
- 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_forwardUnderline the significant zeros in the following numbers:(a) 0.41 (b) 0.041 (c) 0.0410 (d) 4.0100×104arrow_forwardRound the following to the indicated number of significant figures:(a) 0.424 (to two significant figures)(b) 0.0038661 (to three significant figures)(c) 421.25 (to four significant figures)(d) 28,683.5 (to five significant figures)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_forwardExpress each of the following numbers in exponential notation with correct significant figures:(a) 704(b) 0.03344(c) 547.9(d) 22086(e) 1000.00(f) 0.0000000651(g) 0.007157arrow_forwardUnderline the significant zeros in the following numbers:(a) 5.08(b) 508(c) 5.080*10^3(d) 0.05080arrow_forward
- 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_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 do the following numbers contain? (a) 1.233 + .1 (b) 1.233*.1 (c) 1.233/.01arrow_forward
- 16 im stuck onarrow_forwardWhich of the following would give an EXACT number? Group of answer choices (a) Measuring a volume of hydrochloric acid with a graduated cylinder. (b) Weighing yourself on a digital scale. (c) Counting how many rubber bands there are in a drawer. (d)Measuring the length of an inanimate carbon rod with a metric ruler. (e) Timing how long it takes for a chemical reaction to finish using a stopwatch.arrow_forward) 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 . the correct answer is c. 14,500 how step by steparrow_forward
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax