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Problem 84c
Calculate to the correct number of significant figures. c. 4.005 × 74 × 0.007
Problem 84d
Calculate to the correct number of significant figures. d. 453 ÷ 2.031
Problem 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
Problem 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
Problem 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
Problem 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
Problem 88d
Calculate to the correct number of significant figures. d. (3.14 × 2.4367) - 2.34
Problem 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.
Problem 92
Perform each unit conversion. a. 28.9 nm to mm b. 1432 cm3 to L c. 1211 Tm to Gm
Problem 94a
Perform each unit conversion. a. 1.4 in to mm
Problem 94b
Perform each unit conversion. b. 116 ft to cm
Problem 94d
Perform each unit conversion. d. 815 yd to km
Problem 97
A certain European automobile has a gas mileage of 17 km/L. What is the gas mileage in miles per gallon?
Problem 98
A gas can holds 5.0 gal of gasoline. Express this quantity in cm3.
Problem 99a
A house has an area of 195 m2. What is its area in each unit? a. km2 b. dm2 c. cm2
Problem 99b
A house has an area of 195 m2. What is its area in each unit? a. km2 b. dm2 c. cm2
Problem 99c
A house has an area of 195 m2. What is its area in each unit? a. km2 b. dm2 c. cm2
Problem 101
The average U.S. farm occupies 435 acres. How many square miles is this? (1 acre = 43,560 ft2, 1 mile = 5280 ft)
Problem 102
Total U.S. farmland occupies 954 million acres. How many square miles is this? (1 acre = 43,560 ft2, 1 mi = 5280 ft). Total U.S. land area is 3.537 million square miles. What percentage of U.S. land is farmland?
Problem 103
An acetaminophen suspension for infants contains 80 mg/0.80 mL suspension. The recommended dose is 15 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 14 lb? (Assume two significant figures.)
Problem 104
An ibuprofen suspension for infants contains 100 mg/5.0 mL suspension. The recommended dose is 10 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 18 lb? (Assume two significant figures.)
Problem 106
Determine the number of picoseconds in 2.0 hours.
Problem 107
Classify each property as intensive or extensive. a. volume b. boiling point c. temperature d. electrical conductivity e. energy
- Suppose you design a new thermometer called the X thermometer. On the X scale, the boiling point of water is 130 °X, and the freezing point of water is 10 °X. At what temperature are the readings on the Fahrenheit and X thermometers the same?
Problem 109
- Why does a temperature measurement of 25 °C have three significant figures, while a temperature measurement of -196 °C only has two significant figures? Explain.
Problem 112
- Do each calculation without your calculator and give the answers to the correct number of significant figures: a. 1.76 * 10^3 > 8.0 * 10^2 b. 1.87 * 10^-2 + 2 * 10^-4 - 3.0 * 10^-3 c. [(1.36 * 10^5)(0.000322) > 0.082](129.2)
Problem 113
Problem 114
The value of the euro was recently $1.15 U.S., and the price of 1 liter of gasoline in France is 1.42 euro. What is the price of 1 gallon of gasoline in U.S. dollars in France?
Problem 115
A thief uses a can of sand to replace a solid gold cylinder that sits on a weight-sensitive, alarmed pedestal. The can of sand and the gold cylinder have exactly the same dimensions (length = 22 and radius = 3.8 cm). a. Calculate the mass of each cylinder (ignore the mass of the can itself). (density of gold = 19.3 g/cm3, density of sand = 3.00 g/cm3) b. Does the thief set off the alarm? Explain.
Problem 116
The proton has a radius of approximately 1.0×10−13 cm and a mass of 1.7×10−24 g. Determine the density of a proton for a sphere V = (4/3)πr3.
Problem 117
The density of titanium is 4.51 g/cm3. What is the volume (in cubic inches) of 3.5 lb of titanium?