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1.66 Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units (J = joule, the SI unit of en- ergy; mol = mole, the SI unit for amount of substance): (6.626x10-34 J .s)(2.9979x10° m/s) (a) 489x10- m (6.022x1023 molecules/mol)(1.23x10° g) (b) 46.07 g/mol 1 (c) (6.022x1023 atoms/mol)(1.28x10-18 J/atom) .2 where the numbers 2 and 3 in the last term are exact 32

1.66 Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units (J = joule, the SI unit of en- ergy; mol = mole, the SI unit for amount of substance): (6.626x10-34 J .s)(2.9979x10° m/s) (a) 489x10- m (6.022x1023 molecules/mol)(1.23x10° g) (b) 46.07 g/mol 1 (c) (6.022x1023 atoms/mol)(1.28x10-18 J/atom) .2 where the numbers 2 and 3 in the last term are exact 32

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter1: Matter And Measurements
Section: Chapter Questions
Problem 73QAP: A Different civilization on a distant planet has developed a new temperature scale based on ethyl...
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I don’t understand these two questions.(66 and 67)
eters of d from Es 66% nder = 1.62 Write the following numbers in standard notation. Use a ter- minal decimal point when needed. (a) 5.55x10°; (b) 1.0070×10“; (c) 8.85×10-7; (d) 3.004x10-3. 1.63 Write the following numbers in standard notation. Use a ter- minal decimal point when needed. (a) 6.500x10°; (b) 3.46x10-8; (c) 7.5×10²; (d) 1.8856×10². 1.64 Convert the following into correct scientific notation: (a) 802.5x102; (b) 1009.8×10-6; (c) 0.077x10-9. eated 1.65 Convert the following into correct scientific notation: (a) 14.3x10'; (b) 851x10-; (c) 7500x10-3. mea- cali- ain. ck's 1.66 Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units (J = joule, the SI unit of en- ergy; mol = mole, the SI unit for amount of substance): (6.626x10-34 J .s)(2.9979×10® m/s) %3D ures (a) 489x10 m ple ws- (6.022x1023 molecules/mol) (1.23x10 g) (b) this uld (c) (6.022x1023 atoms/mol)(1.28x10-18 46.07 g/mol J/atom) where the numbers 2 and 3 in the last term are exact 1.67 Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units: 4.32x10' g (The term is exact.) (a) (3.1416)(1.95x10 cm)³ (1.84x10° g)(44.7 m/s)? (b) i- (The term 2 is exact.) 2 (1.07x10 mol/L)²(3.8×10-³ mol/L) (c) (8.35x10 mol/L)(1.48×10-² mol/L) 1.68 Which statements include exact numbers? (a) Angel Falls is 3212 ft high. (b) There are 8 known planets in the Solar System. e
Transcribed Image Text:eters of d from Es 66% nder = 1.62 Write the following numbers in standard notation. Use a ter- minal decimal point when needed. (a) 5.55x10°; (b) 1.0070×10“; (c) 8.85×10-7; (d) 3.004x10-3. 1.63 Write the following numbers in standard notation. Use a ter- minal decimal point when needed. (a) 6.500x10°; (b) 3.46x10-8; (c) 7.5×10²; (d) 1.8856×10². 1.64 Convert the following into correct scientific notation: (a) 802.5x102; (b) 1009.8×10-6; (c) 0.077x10-9. eated 1.65 Convert the following into correct scientific notation: (a) 14.3x10'; (b) 851x10-; (c) 7500x10-3. mea- cali- ain. ck's 1.66 Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units (J = joule, the SI unit of en- ergy; mol = mole, the SI unit for amount of substance): (6.626x10-34 J .s)(2.9979×10® m/s) %3D ures (a) 489x10 m ple ws- (6.022x1023 molecules/mol) (1.23x10 g) (b) this uld (c) (6.022x1023 atoms/mol)(1.28x10-18 46.07 g/mol J/atom) where the numbers 2 and 3 in the last term are exact 1.67 Carry out each calculation, paying special attention to sig- nificant figures, rounding, and units: 4.32x10' g (The term is exact.) (a) (3.1416)(1.95x10 cm)³ (1.84x10° g)(44.7 m/s)? (b) i- (The term 2 is exact.) 2 (1.07x10 mol/L)²(3.8×10-³ mol/L) (c) (8.35x10 mol/L)(1.48×10-² mol/L) 1.68 Which statements include exact numbers? (a) Angel Falls is 3212 ft high. (b) There are 8 known planets in the Solar System. e
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