Problema 78
How many significant figures are in each number? d. 1.563300×1011 m
Problema 78c
How many significant figures are in each number? c. 108,700 km
Problema 79
Which numbers are exact (and therefore have an unlimited number of significant figures)? a. p = 3.14 b. 12 in = 1 ft c. EPA gas mileage rating of 26 miles per gallon d. 1 gross = 144
Problema 79a,c,d
Which numbers are exact (and therefore have an unlimited number of significant figures)? a. π = 3.14 c. EPA gas mileage rating of 26 miles per gallon d. 1 gross = 144
Problema 79b
Which numbers are exact (and therefore have an unlimited number of significant figures)? b. 12 in = 1 ft
- Is each number rounded to four significant figures? a. 156.852 b. 156.842 c. 156.849 d. 156.899
Problema 81
Problema 82
Round each number to three significant figures. a. 79,845.82 b. 1.548937×107 c. 2.3499999995 d. 0.000045389
Problema 83
Calculate to the correct number of significant figures. a. 9.15 ÷ 4.970 b. 1.54 × 0.03060 × 0.69 c. 27.5 × 1.82 ÷ 100.04 d. (2.290 × 106) ÷ (6.7 × 104)
Problema 84a
Calculate to the correct number of significant figures. a. 89.3 × 77.0 × 0.08
Problema 84b
Calculate to the correct number of significant figures. b. (5.01×105) / (7.8×102)
Problema 84c
Calculate to the correct number of significant figures. c. 4.005 × 74 × 0.007
Problema 84d
Calculate to the correct number of significant figures. d. 453 ÷ 2.031
Problema 85
Calculate to the correct number of significant figures. a. 43.7 - 2.341 b. 17.6 + 2.838 + 2.3 + 110.77 c. 19.6 + 58.33 - 4.974 d. 5.99 - 5.572
Problema 86
Calculate to the correct number of significant figures. a. 0.004 + 0.09879 b. 1239.3 + 9.73 + 3.42 c. 2.4 - 1.777 d. 532 + 7.3 - 48.523
Problema 86a,b,c
Calculate to the correct number of significant figures. a. 0.004 + 0.09879 b. 1239.3 + 9.73 + 3.42 c. 2.4 - 1.777
Problema 86d
Calculate to the correct number of significant figures. d. 532 + 7.3 - 48.523
Problema 87
Calculate to the correct number of significant figures. a. (24.6681 * 2.38) + 332.58 b. (85.3 - 21.489) , 0.0059 c. (512 , 986.7) + 5.44 d. [(28.7 * 105) , 48.533] + 144.99
Problema 88a,b
Calculate to the correct number of significant figures. a. [(1.7×106) / (2.63×105)] + 7.33 b. (568.99 - 232.1) / 5.3
Problema 88c
Calculate to the correct number of significant figures. c. (9443 + 45 - 9.9) × 8.1 × 106
Problema 88d
Calculate to the correct number of significant figures. d. (3.14 × 2.4367) - 2.34
Problema 89
A flask containing 11.7 mL of a liquid weighs 132.8 g with the liquid in the flask and 124.1 g when empty. Calculate the density of the liquid in g/mL to the correct number of significant digits.
Problema 91
Perform each unit conversion. a. 27.8 L to cm3 b. 1898 mg to kg c. 198 km to cm
Problema 92
Perform each unit conversion. a. 28.9 nm to mm b. 1432 cm3 to L c. 1211 Tm to Gm
Problema 93
Perform each unit conversion. a. 154 cm to in b. 3.14 kg to g c. 3.5 L to qt d. 109 mm to in
Problema 94a
Perform each unit conversion. a. 1.4 in to mm
Problema 94b
Perform each unit conversion. b. 116 ft to cm
Problema 94c
Perform each unit conversion. c. 1845 kg to lb
Problema 94d
Perform each unit conversion. d. 815 yd to km
Problema 95
A runner wants to run 10.0 km. Her running pace is 7.5 mi per hour. How many minutes must she run?
Problema 96
A cyclist rides at an average speed of 18 mi per hour. If she wants to bike 212 km, how long (in hours) must she ride?
Ch.1 - Matter, Measurement & Problem Solving
