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1.69 Which of the following include êxact (a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 2.99792x10° m/s. (b) The density of mercury at 25°C is 13.53 g/mL. (c) There are 3600 s in 1 h. (a) In 2016, the United States had 50 states.

1.69 Which of the following include êxact (a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 2.99792x10° m/s. (b) The density of mercury at 25°C is 13.53 g/mL. (c) There are 3600 s in 1 h. (a) In 2016, the United States had 50 states.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(c) (6.022x10 atoms/mol)(1.28×10¬1º J/atom) where the numbers 2 and 3 in the last term are exact rs: 1.67) Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units: 4.32x10' g rs: (The term is exact.) (a) (3.1416)(1.95x10² cm)³ (1.84x10 g)(44.7 m/s)? (b) gnifi- 4 sf); (The term 2 is exact.) 2 (1.07x10 mol/L)²(3.8x10-³ mol/L) (c) (8.35x10-5 mol/L)(1.48×10-² mol/L) gnifi- 2 sf); 1.68 Which statements include exact numbers? (a) Angel Falls is 3212 ft high. (b) There are 8 known planets in the Solar System. (c) There are 453.59 g in 1 lb. (d) There are 1000 mm in 1 m. 1.69 Which of the following include exact numbers? (a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 2.99792x10° m/s. (b) The density of mercury at 25°C is 13.53 g/mL. (c) There are 3600 s in 1 h. (a) In 2016, the United States had 50 states. Co one i your Problems in Context 1.70 How long is the metal strip shown below? Be sure to answer with the correct number of significant figures. your cm
Transcribed Image Text:(c) (6.022x10 atoms/mol)(1.28×10¬1º J/atom) where the numbers 2 and 3 in the last term are exact rs: 1.67) Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units: 4.32x10' g rs: (The term is exact.) (a) (3.1416)(1.95x10² cm)³ (1.84x10 g)(44.7 m/s)? (b) gnifi- 4 sf); (The term 2 is exact.) 2 (1.07x10 mol/L)²(3.8x10-³ mol/L) (c) (8.35x10-5 mol/L)(1.48×10-² mol/L) gnifi- 2 sf); 1.68 Which statements include exact numbers? (a) Angel Falls is 3212 ft high. (b) There are 8 known planets in the Solar System. (c) There are 453.59 g in 1 lb. (d) There are 1000 mm in 1 m. 1.69 Which of the following include exact numbers? (a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 2.99792x10° m/s. (b) The density of mercury at 25°C is 13.53 g/mL. (c) There are 3600 s in 1 h. (a) In 2016, the United States had 50 states. Co one i your Problems in Context 1.70 How long is the metal strip shown below? Be sure to answer with the correct number of significant figures. your cm
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