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문제 56b
Use prefix multipliers to express each measurement without exponents. b. 55.2×10−10 s
문제 57a,b,c
Use scientific notation to express each quantity with only base units (no prefix multipliers). a. 4.5 ns b. 18 fs c. 128 pm
문제 57d
Use scientific notation to express each quantity with only base units (no prefix multipliers). d. 35 μm
문제 58a,b,c,d
Use scientific notation to express each quantity with only base units (no prefix multipliers). a. 35 mL b. 225 Mm c. 133 Tg d. 1.5 cg
문제 59a
Complete the table. a. 1245 kg _ 1.245×106 g _ 1.245×109 mg
문제 59b
Complete the table. b. 515 km _____dm _____cm
문제 59c
Complete the table. c. 122.355 s _____ms _____ks
문제 59d
Complete the table. d. 3.345 kJ _____J _____mJ
문제 60a
Complete the table. a. 355 km/s _____cm/s _____m/ms
문제 60b,d
Complete the table. b. 1228 g/l _____g/ml _____kg/ml d. 2.554 mg/ml _____g/l _____mg/ml
문제 60c
Complete the table. c. 554 mK/s _____K/s _____mK/ms
문제 62
Express the quantity 556.2×10−12 s in each unit. a. ms b. ns c. ps d. fs
문제 63
How many 1-cm squares would it take to construct a square that is 1 m on each side?
- How many 1-cm cubes does it take to construct a cube that is 4 cm on each edge?
문제 64
문제 65
A new penny has a mass of 2.49 g and a volume of 0.349 cm3. Is the penny made of pure copper? Explain your answer.
문제 66
A titanium bicycle frame displaces 0.314 L of water and has a mass of 1.41 kg. What is the density of the titanium in g/cm3?
문제 67
Glycerol is a syrupy liquid often used in cosmetics and soaps. A 3.25 L sample of pure glycerol has a mass of 4.10×103 g. What is the density of glycerol in g/cm3?
문제 68
A supposedly gold nugget displaces 19.3 mL of water and has a mass of 371 g. Could the nugget be made of gold?
문제 69a
Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. a. What is the mass in g of 417 mL of ethylene glycol? b. What is the volume in L of 4.1 kg of ethylene glycol?
문제 69b
Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. a. What is the mass in g of 417 mL of ethylene glycol? b. What is the volume in L of 4.1 kg of ethylene glycol?
문제 70
Acetone (nail polish remover) has a density of 0.7857 g/cm3. a. What is the mass in g of 28.56 mL of acetone? b. What is the volume in mL of 6.54 g of acetone?
문제 71
A small airplane takes on 245 L of fuel. If the density of the fuel is 0.821 g/mL, what mass of fuel has the airplane taken on?
문제 72
Human fat has a density of 0.918 g/cm3. How much volume (in cm3) is gained by a person who gains 10.0 lb of pure fat? the reliability of a Measurement and Significant Figures
문제 73
Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus.
문제 74a
Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus. Digital balances normally display mass to the correct number of significant figures for that particular balance.
문제 74b
Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus. Digital balances normally display mass to the correct number of significant figures for that particular balance.
문제 74c
Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus. Digital balances normally display mass to the correct number of significant figures for that particular balance.
문제 75
For each number, underline the zeroes that are significant and draw an x through the zeroes that are not. a. 1,050,501 km b. 0.0020 m c. 0.000000000000002 s d. 0.001090 cm
문제 76
For each number, underline the zeroes that are significant and draw an x through the zeroes that are not. a. 180,701 mi b. 0.001040 m c. 0.005710 km d. 90,201 m
문제 77
How many significant figures are in each number? a. 0.000312 m b. 312,000 s c. 3.12 × 105 km d. 13,127 s e. 2000