Chemistry In Focus
6th Edition
ISBN: 9781305084476
Author: Tro, Nivaldo J., Neu, Don.
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 16E
Express each of the following numbers in scientific notation:
a. 19,570,261 (population of New York state)
b. 7,190,900,000 (world population)
c. 0.00000000007461 m (length of a hydrogen- hydrogen
d. 0.000015 m (diameter of a human hair)
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A dessert contains 142.05 g of vanilla ice cream, 82 g of fudge sauce, and 45.7 g of nuts.
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III
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f. Is the density of the solution an intensive property or an extensive property?
8. Create a concept map that illustrates the relationship between scientific notation and unit prefixes.
9. A balloon is filled with helium at a temperature of 25.0°C.
a. Calculate the temperature of the helium in degrees Fahrenheit.
b. Calculate the temperature of the helium on the Kelvin scale.
c. Gas density decreases with increasing temperature. What would you observe if you heated the balloon?
d. Gas density increases with decreasing temperature. What would you observe if you cooled the balloon?
e. Is helium a pure substance or a mixture?
f. Is helium an element or a compound?
10. The diameter of an aluminum atom is 250 picometers (pm) (1 pm = 10-¹2 m). How many aluminum atoms must be placed end to
end to make a "chain" of aluminum atoms 1 ft long?
Design credits: A Human Perspective group of people, kristian sekulic/Getty Images; A Medical Perspective otoscope, Martin Barraud/age fotostock;…
A piece of metal with a mass of 26.7 g was dropped into a graduated cylinder containing 17.00 mL of water. The graduated cylinder after the addition of the metal is shown. Determine the density of the metal.
Chapter 2 Solutions
Chemistry In Focus
Ch. 2 - The volume of a liquid can be measured with a...Ch. 2 - Scientific Notation Express the number 0.0000023...Ch. 2 - Prob. 2SCCh. 2 - Prob. 3SCCh. 2 - Converting Between Units Convert 34.0 cm to...Ch. 2 - Prob. 2.3YTCh. 2 - Extracting Information from Graphical Data The...Ch. 2 - Solving Word Problems...Ch. 2 - Solving Word Problems Involving Units Raised to a...Ch. 2 - Prob. 2.7YT
Ch. 2 - Prob. 2.8YTCh. 2 - Without doing any calculations, determine whether...Ch. 2 - Prob. 1ECh. 2 - Prob. 2ECh. 2 - Prob. 3ECh. 2 - What is the difference between reporting the...Ch. 2 - Prob. 5ECh. 2 - Prob. 6ECh. 2 - Prob. 7ECh. 2 - Prob. 8ECh. 2 - Prob. 9ECh. 2 - What is a conversion factor? Give two examples of...Ch. 2 - Prob. 11ECh. 2 - Identify the decimal part, the exponential part,...Ch. 2 - What is density? Give two examples of possible...Ch. 2 - Since oil floats on water, what can you say about...Ch. 2 - Express each of the following in scientific...Ch. 2 - Express each of the following numbers in...Ch. 2 - Express each of the following in decimal notation:...Ch. 2 - Express each of the following in decimal notation:...Ch. 2 - The circumference of Earth at the equator is...Ch. 2 - The distance from New York to Los Angeles is 2777...Ch. 2 - A can of soda contains 12 fluid ounces. What is...Ch. 2 - A laboratory beaker can hold 150mL. How many fluid...Ch. 2 - A car has a fuel efficiency of 27 miles per...Ch. 2 - A European rental car can travel 17 km on a liter...Ch. 2 - Perform each of the following conversions within...Ch. 2 - Perform each of the following conversions within...Ch. 2 - Prob. 27ECh. 2 - Perform the following conversions between the...Ch. 2 - A pond has a surface area of 1552m2. Convert this...Ch. 2 - An orange has a volume of 54cm3. Convert this...Ch. 2 - Prob. 31ECh. 2 - Prob. 32ECh. 2 - A runner runs at a pace of 8.5 minutes per mile....Ch. 2 - A driver drives an average speed of 58 miles per...Ch. 2 - A sports utility vehicle gets 12 miles per gallon...Ch. 2 - A hybrid electric vehicle (HEV) is a car with both...Ch. 2 - The following graph shows the concentration of an...Ch. 2 - The following graph shows the historical...Ch. 2 - A 28.4-cm3 sample of titanium has a mass of...Ch. 2 - A 1.5-cm3 sample of silicon has a mass of 3.5 g....Ch. 2 - A 5.00-L sample of pure glycerol has a mass of...Ch. 2 - A 3.80-mL sample of mercury has a mass of 51.4g....Ch. 2 - Ethylene glycol (antifreeze) has a density of...Ch. 2 - A thief plans to steal a bar of gold from a womans...Ch. 2 - Prob. 45ECh. 2 - A proton has a radius of approximately 110-13 cm...Ch. 2 - What did Einstein mean when he said, The most...Ch. 2 - Prob. 48ECh. 2 - Prob. 49ECh. 2 - Prob. 50ECh. 2 - Prob. 51ECh. 2 - Consider each of the following balances. Which one...Ch. 2 - Each of the following coins is photographed to...Ch. 2 - Obtain an outdoor thermometer and record the...
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