solutions chapter 1

solutions chapter 1 - CHAPTER 1 CHEMICAL FOUNDATIONS 1...

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CHAPTER 1 CHEMICAL FOUNDATIONS 1 CHAPTER ONE 4. a. (iii) Mass is always additive; this is an example of the law of conservation of mass. b. (iv) or (v) This is a poorly written question, so either answer is acceptable. Density(sugar water) > density(water). Remember how cans of Regular Coke sink? 26. a. one significant figure (S.F.). The implied uncertainty is >1000 pages. More significant figures should be added if a more precise number is known. b. two S.F. c. four S.F. d. two S.F. e. infinite number of S.F. (exact number) f. one S.F. 28. a. 1 00; 1 S.F. b. 1.0 × 10 2 ; 2 S.F. c. 1.00 × 10 3 ; 3 S.F. d. 100. ; 3 S.F. e. 0.0048 ; 2 S.F. f. 0.00480 ; 3 S.F. g. 4.80 × 3 10 - ; 3 S.F. h. 4.800 × 3 10 - ; 4 S.F. 32. For multiplication and/or division, the result has the same number of significant figures as the number in the calculation with the fewest significant figures. a. 2.26 35 2.26 1.01 273 0.0821 0.102 = = × × b. 0.14 × 6.022 × 10 23 = 8.4 31 × 10 22 = 8.4 × 10 22 ; Since 0.14 only has two significant figures, the result should only have two significant figures. c.
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This note was uploaded on 03/26/2010 for the course CHEM 105ALg taught by Professor Bau during the Spring '07 term at USC.

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solutions chapter 1 - CHAPTER 1 CHEMICAL FOUNDATIONS 1...

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