Chemistry: Structure and Properties
1st Edition
ISBN: 9780321834683
Author: Nivaldo J. Tro
Publisher: PEARSON
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Textbook Question
Chapter A2, Problem 7E
Round each number to four significant figures.
a. 156.852
b. 156.842
c. 156.849
d. 156.899
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Round each number to three significant figures.
b. 1.548937 x 10
a. 79,845.82
c. 2.3499999995
d. 0.000045389
Round each number to four significant figures.a. 84,791 kg c. 256.75 cmb. 38.5432 g d. 4.9356 m
Round each number to four significant figures.a. 156.852 b. 156.842 c. 156.849 d. 156.899
Chapter A2 Solutions
Chemistry: Structure and Properties
Ch. A2 - For each number, underline the zeroes that are...Ch. A2 - Prob. 2ECh. A2 - Prob. 3ECh. A2 - How many significant figures are in each number?...Ch. A2 - Prob. 5ECh. A2 - Indicate the number of significant figures in each...Ch. A2 - Round each number to four significant figures. a....Ch. A2 - Round each number to three significant figures. a....Ch. A2 - Prob. 9ECh. A2 - Prob. 10E
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- Determine the number of significant figures in each measurement. a. 508.0 L c. 1.0200 × 1 0 5 kgb. 820,400.0 L d. 807,000 kgarrow_forwardRound each number to four significant figures.a. 431,801 kg d. 0.004384010 cmb. 10,235.0 mg e. 0.00078100 mLc. 1.0348 m f. 0.0098641 cgarrow_forward3. Provide the answer with the appropriate number of significant figures. a. 6.03 x 650 b. 2.7 x 1031.645 c. 3.000 + 7.61 + 124.2 d. (3.55 x 109) x (9.5 x 10-7) e. 7.845 - 1.20 f. 7.845- 1.2 g. (6.72 x 106 ) - (4.32 x 10“ )arrow_forward
- Round each figure to three significant figures.a. 0.003210 g d. 25.38 Lb. 3.8754 kg e. 0.08763 cmc. 219,034 m f. 0.003109 mgarrow_forwardDetermine the number of significant figures in each measurement.a. 340,438 g e. 1.040 sb. 87,000 ms f. 0.0483 mc. 4080 kg g. 0.2080 mLd. 961,083,110 m h. 0.0000481 garrow_forwardCount the significant figures of each quantity. a. 579.420 b. 3.14159265 c. 2 × 1011 d. 50.1 e. 3800arrow_forward
- 1) The density of a material can be used to calculate the volume of an object if its mass is known. Likewise, the mass can be calculated if the density and volume are known. A pre-1964 quarter, made predominantly of silver (density= 10.5 g/mL), was determined to have a mass of 6.25 g. What is the volume of a quarter? A. 65.6 B. 0.595 mL C. 1.68 mL D. 6.25 mL 2) Add: 2.11 + 104.056 + 0.1205 A. 106 B. 106.29 C. 106.286 D. 106.2865arrow_forward2. Significant Figures Record the number of significant figures in each of the following numbers. a. 6.03 b. 0.0603 c. 650.3 d. 650 e. 2.670 x 103 f. 0.0100arrow_forwardAssume you measured an irregular shaped object in a beaker to be 149.167 g, and you know that the empty beaker weighs 96.222 g. You then carefully drop this object in a graduated cylinder containing 20.0 mL of water, and the water level rises to 42.3 mL. Calculate the final density of the irregular shaped object to the correct number of significant figures. a. 1.25 b. 2.37 c. 7.46 d. 4.31 e. 3.53arrow_forward
- Round each of the following numbers to two significant figures.a. 6.2262 b. 3895 c. 6.885 d. 2.2247 e. 0.0004109arrow_forwardA house has an area of 195 m2. What is its area in each unit?a. km2 b. dm2 c. cm2arrow_forwardReview the rules for significant figures in calculations. Perform the following mathematical operations and round to the correct number of significant figures. a. 27.95 + 13.6 b. 408 - 12.21 c. 81.32/0.781 d. 15.9 x 3.021arrow_forward
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