MOLECULAR NATURE OF MATTER 7/E LL W/AC
7th Edition
ISBN: 9781119664796
Author: JESPERSEN
Publisher: WILEY
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Textbook Question
Chapter 1, Problem 15PE
A gold-colored metal object has a mass of 365 g and a volume of
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You have a piece of gold jewelry that weighs 9 g. Its volume is 0.74 cm3 Assume that the metal is an alloy (a mixture of solids) of gold and silver, which have densities of 19 g/cm3 and 10 g/cm3 respectively. Also assum that there is no change in volume when the pure metals are mixed. The relative amount of gold in an alloy is measured in karats. Pure gold is 24 karats; an alloy of 50% gold is 12 carats. State the proportion of gold in the jewelry in karats.
PART 2
Density of Gravel
The mass of the empty weighing boat was measured. Then the weighing boat was filled with gravel,
and the mass of the weighing boat and the gravel was measured.
Mass of weighing boat = 0.98 g
Mass of weighing boat and gravel = 58.98 g
We are interested in the mass of the gravel.
(a) Gravel is matter. Why?
(b) What is the name of this method of measurement of mass of a substance?
(c) What is the other method of measurement of mass of a substance?
(d) What type of balance are we using in this experiment?
(e) Calculate the mass of the sample of gravel.
A chemist mixes two liquids, A and B, to form a homogeneous mixture. The densities of the liquids are
2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a small object into the mixture, she finds that
the object becomes suspended in the liquid; that is, it neither sinks nor floats. If the mixture is made of
41.37 percent A and 58.63 percent B by volume, what is the density of the metal? Group of answer
choices 2.413 g/mL 1.753 g/mL 2.691 g/mL 2.015 g/mL 1.913 g/mL
Chapter 1 Solutions
MOLECULAR NATURE OF MATTER 7/E LL W/AC
Ch. 1 - Practice Exercise 1.1
What is the process of the...Ch. 1 - Practice Exercise 1.2
Classify the following as an...Ch. 1 - Practice Exercise 1.3
Each of the following can be...Ch. 1 - Practice Exercise 1.4
Each of these properties can...Ch. 1 - Prob. 5PECh. 1 - Prob. 6PECh. 1 - What is 355CinF? (Hint: What tool relates these...Ch. 1 - Convert 55F to its Celsius temperature. What...Ch. 1 - Prob. 9PECh. 1 - Perform the following calculations involving...
Ch. 1 - Practice Exercise 1.11
Use dimensional analysis to...Ch. 1 - Use dimensional analysis to perform the following...Ch. 1 - A 15.0 mL sample of polystyrene used in insulated...Ch. 1 - Practice Exercise 1.14
A crystal of salt was grown...Ch. 1 - A gold-colored metal object has a mass of 365 g...Ch. 1 - Practice Exercise 1.16
A certain metal alloy has a...Ch. 1 - Practice Exercise 1.17
Table wines have a minimum...Ch. 1 - Practice Exercise 1.18
Diabetes can cause a...Ch. 1 - After some thought, give two reasons why a course...Ch. 1 - What steps are involved in the scientific method?Ch. 1 - Prob. 3RQCh. 1 - Can a theory be proved to be correct? Can a theory...Ch. 1 - 1.5 Define matter. Which are examples of matter?...Ch. 1 - Define (a) element, (b) compound, (c) mixture, (d)...Ch. 1 - 1.7 Which kind of change, chemical or physical, is...Ch. 1 - Prob. 8RQCh. 1 - 1.9 What is the name of each of the following...Ch. 1 - For each of the following molecular pictures,...Ch. 1 - 1.11 Consider the following four samples of...Ch. 1 - 1.12 What is a physical change? What is a chemical...Ch. 1 - 1.13 “A sample of calcium (an electrically...Ch. 1 - 1.14 In places like Saudi Arabia, freshwater is...Ch. 1 - How does a chemical property differ from a...Ch. 1 - Distinguish between an extensive and an intensive...Ch. 1 - Determine whether each of the following is an...Ch. 1 - Describe one or more physical properties of each...Ch. 1 - Why must measurements always be written with a...Ch. 1 - What is the only SI base unit that includes a...Ch. 1 - Which SI units are mainly used in chemistry?Ch. 1 - What are derived units? Give two examples of...Ch. 1 - What is the meaning of each of the following...Ch. 1 - What reference points do we use in calibrating the...Ch. 1 - In each pair, which is larger: (a) A Fahrenheit...Ch. 1 - 1.26 Define the term significant figures.
Ch. 1 - Explain how to round numbers.Ch. 1 - What is the difference between accuracy and...Ch. 1 - 1.29 Suppose a length had been reported to be...Ch. 1 - What is the difference between the treatment of...Ch. 1 - When constructing a conversion factor between two...Ch. 1 - Suppose someone suggested using the fraction 3...Ch. 1 - In 1 hour there are 3600 seconds. By what...Ch. 1 - If you were to convert the measured length 4.165...Ch. 1 - 1.35 Write the equation that defines density....Ch. 1 - Compare density and specific gravity. What is the...Ch. 1 - 1.37 Give four sets of units for density. What...Ch. 1 - 1.38 Silver has a density of . Express this as an...Ch. 1 - Determine whether each of the following is a...Ch. 1 - 1.40 Determine whether each of the following is a...Ch. 1 - At room temperature, what is the state of each of...Ch. 1 - At room temperature, determine the appropriate...Ch. 1 - What number should replace the question mark in...Ch. 1 - 1.44 What numbers should replace the question...Ch. 1 - Perform the following conversions. (a) 57CtoF (b)...Ch. 1 - Perform the following conversions. (a) 98FtoC (b)...Ch. 1 - The temperature of the core of the sun is...Ch. 1 - Natural gas is mostly methane, a substance that...Ch. 1 - A healthy dog has a temperature ranging from...Ch. 1 - Prob. 50RQCh. 1 - The length of a wire was measured using two...Ch. 1 - What are the temperatures being measured in the...Ch. 1 - 1.53 How many significant figures do the following...Ch. 1 - How many significant figures do the following...Ch. 1 - 1.55 Perform the following arithmetic and round...Ch. 1 - 1.56 Perform the following arithmetic and round...Ch. 1 - Which are exact numbers and which ones have a...Ch. 1 - Prob. 58RQCh. 1 - 1.59 Perform the following conversions.
Ch. 1 - 1.60 Perform the following conversions.
Ch. 1 - 1.61 Perform the following conversions. If...Ch. 1 - 1.62 Perform the following conversions. If...Ch. 1 - 1.63 Perform the following conversions....Ch. 1 - Prob. 64RQCh. 1 - The human stomach can expand to hold up to 4.2...Ch. 1 - In the movie Cool Hand Luke (1967), Luke wagers...Ch. 1 - 1.67 The winds in a hurricane can reach almost 200...Ch. 1 - 1.68 A bullet is fired at a speed of 2435 ft/s....Ch. 1 - 1.69 A bullet leaving the muzzle of a pistol was...Ch. 1 - 1.70 On average, water flows over Niagara Falls at...Ch. 1 - Prob. 71RQCh. 1 - *1.72 One degree of latitude on the earth’s...Ch. 1 - Calculate the density of kerosene, in g/mL, if its...Ch. 1 - Calculate the density of magnesium, in g/cm3, if...Ch. 1 - Acetone, the solvent in some nail polish removers,...Ch. 1 - A glass apparatus contains 26.223 g of water when...Ch. 1 - 1.77 Chloroform, a chemical once used as an...Ch. 1 - Gasolines density is about 0.65 g/mL. How much...Ch. 1 - Prob. 79RQCh. 1 - Prob. 80RQCh. 1 - The space shuttle uses liquid hydrogen as its...Ch. 1 - Prob. 82RQCh. 1 - 1.83 Some time ago, a U.S. citizen traveling in...Ch. 1 - Driving to work one day, one of the authors of...Ch. 1 - Prob. 85RQCh. 1 - Prob. 86RQCh. 1 - Prob. 87RQCh. 1 - A pycnometer is a glass apparatus used for...Ch. 1 - 1.89 Radio waves travel at the speed of light, ....Ch. 1 - Prob. 90RQCh. 1 - Prob. 91RQCh. 1 - Aerogel or solid smoke" is a novel material that...Ch. 1 - A liquid known to be either ethanol (ethyl...Ch. 1 - An unknown liquid was found to have a density of...Ch. 1 - 1.95 There exists a single temperature at which...Ch. 1 - In the text, the Kelvin scale of temperature is...Ch. 1 - Density measurements can be used to analyze...Ch. 1 - An artist's statue has a surface area of 14.6ft2....Ch. 1 - What is the volume in cubic millimeters of a 3.54...Ch. 1 - 1.100 A solution is defined as a uniform mixture...Ch. 1 - How do you know that Coca-Cola is not a compound?...Ch. 1 - Find two or more web sites that give the values...Ch. 1 - 1.103 Reference books such as the Handbook of...Ch. 1 - A student used a 250 mL graduated cylinder having...Ch. 1 - Prob. 105RQCh. 1 - Gold has a density of 19.31gcm-3. How many grams...Ch. 1 - A Boeing 747 jet airliner carrying 568 people...Ch. 1 - *1.108 Download a table of data for the density of...Ch. 1 - List the physical and chemical properties...Ch. 1 - Prob. 110RQ
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- Gold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin sheets. Assuming that a sheet of gold leaf is 1.27 105 cm thick, how many square feet of gold leaf could be obtained from 28.35 g gold? The density of gold is 19.3 g/cm3.arrow_forwardA sample of a bright blue mineral was weighed in air, then weighed again while suspended in water. An object is buoyed up by the mass of the fluid displaced by the object. In air, the mineral weighed 7.35 g; in water, it weighed 5.40 g. The densities of air and water are 1.205 g/L and 0.9982 g/cm3, respectively. What is the density of the mineral?arrow_forwardA sample of vermilion-colored mineral was weighed in air, then weighed again while suspended in water. An object is buoyed up by the mass of the fluid displaced by the object. In air, the mineral weighed 18.49 g; in water, it weighed 16.21 g. The densities of air and water are 1.205 g/L and 0.9982 g/cm3, respectively. What is the density of the mineral?arrow_forward
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