Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
8th Edition
ISBN: 9781285199030
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Mole Concept
Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can b…
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Chapter 2, Problem 166CP

The radius of a neon atom is 69 pm, and its mass is 3.35   × 10 − 23 g. What is the density of the atom in grams per cubic centimeter ( g/cm 3 )? Assume the atom is a sphere with volume

   = 4 3 π r 3 .

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Chapter 2 Solutions

Introductory Chemistry: A Foundation

Ch. 2.1 - Exercise 2.1 Write the numbers 357 and 0.0055 in...Ch. 2.2 - What if you were not allowed to use units for one...Ch. 2.5 - Exercise 2.2 Give the number of significant...Ch. 2.5 - Exercise 2.3 Give the answer for each calculation...Ch. 2.6 - Exercise 2.4 Wine is often bottled in 0.750-L...Ch. 2.6 - Exercise 2.5 Racing cars at the Indianapolis Motor...Ch. 2.7 - Exercise 2.6 Which temperature is colder, 172 K or...Ch. 2.7 - Exercise 2.7 Hot tubs are often maintained at 41...Ch. 2.7 - Exercise 2.8 An antifreeze solution in a car’s...Ch. 2.8 - Exercise 2.9A student wants to identify the main...
Ch. 2 - a. There are 365 days/year, 24 hours/day, 12...Ch. 2 - You go to a convenience store to buy candy and...Ch. 2 - When a marble is dropped into a beaker of water,...Ch. 2 - Consider water in each graduated cylinder as...Ch. 2 - What is the numerical value of a conversion...Ch. 2 - For each of the following numbers, indicate which...Ch. 2 - Consider the addition of “1 5.4” to “28.” What...Ch. 2 - Consider multiplying “26.2” by “16.43.” What would...Ch. 2 - In lab you report a measured volume of 128.7 mL of...Ch. 2 - Sketch two pieces of glassware: one that can...Ch. 2 - Oil floats on water but is “thicker” than water....Ch. 2 - Show how converting numbers to scientific notation...Ch. 2 - You are driving 65mph and take your eyes oil the...Ch. 2 - You have a1.0cm3 sample of lead and a1.0cm3 sample...Ch. 2 - The beakers shown below have different precisions....Ch. 2 - True or false? For any mathematical operation...Ch. 2 - Complete the following and explain each in your...Ch. 2 - For each of the following figures, a through d,...Ch. 2 - For the pin shown below, why is the third digit...Ch. 2 - Why can the length of the pin shown below not be...Ch. 2 - Use the figure below to answer the following...Ch. 2 - A represents a quantitative observation.Ch. 2 - Although your textbook lists (he rules for...Ch. 2 - When a large or small number is written in...Ch. 2 - When a large or small number is written in...Ch. 2 - Will the power of 10 have apositiveor...Ch. 2 - Will the power of 10 have a positive, negative, or...Ch. 2 - Express each of the following numbers...Ch. 2 - Rewrite each of the following as an “ordinary”...Ch. 2 - By how many places must the decimal point be...Ch. 2 - By how many places must the decimal point be...Ch. 2 - Prob. 11QAPCh. 2 - Write each of the following numbers as “ordinary”...Ch. 2 - Write each of the following numbers...Ch. 2 - Prob. 14QAPCh. 2 - What are the fundamental units of mass, length,...Ch. 2 - Give the metric prefix that corresponds to each of...Ch. 2 - Students often have trouble relating measurements...Ch. 2 - Students often have trouble relating measurements...Ch. 2 - Students often have trouble relating measurements...Ch. 2 - Students often have trouble relating measurements...Ch. 2 - The road sign I just passed says “New York City...Ch. 2 - The GPS in my car indicates that t have 100. mi...Ch. 2 - The tablecloth on my dining room table is 2 in...Ch. 2 - Who is taller, a man who is 1.62 in tall or a...Ch. 2 - The fundamental SI unit of length is the meter....Ch. 2 - 26. Which English unit of length or distance is...Ch. 2 - The unit of volume in the metric system is the...Ch. 2 - Which metric system unit is most appropriate for...Ch. 2 - When a measuring scale is used properly to the...Ch. 2 - What does it mean to say LI1amevery measurement we...Ch. 2 - For the pin shown in Fig. 2.5, why is the third...Ch. 2 - Why can the length of the pin shown in Fig. 2.5...Ch. 2 - Indicate the number of significant figures in each...Ch. 2 - Indicate the number of significant figures implied...Ch. 2 - When we round off a number, if the number to the...Ch. 2 - In a multiple-step calculation, is it better to...Ch. 2 - Round off each of the following numbers to three...Ch. 2 - Round off each of the following numbers to two...Ch. 2 - Round off each of the following numbers to the...Ch. 2 - Round off each of the following numbers to the...Ch. 2 - Consider the calculation indicated below:...Ch. 2 - The following water measurements are made: 18 mL...Ch. 2 - When the calculation(2.31)(4.9795103)/(1.9971104)...Ch. 2 - Prob. 44QAPCh. 2 - When the sum 4.9965 + 2.11 + 3.887 is calculated,...Ch. 2 - How many digits after the decimal point should he...Ch. 2 - Evaluate each of the following mathematical...Ch. 2 - Evaluate each of the following mathematical...Ch. 2 - Without actually performing the calculations...Ch. 2 - Without actually performing the calculations...Ch. 2 - How many significant digits should be used to...Ch. 2 - Evaluate each of the following and write the...Ch. 2 - A represents a ratio based on an equivalence...Ch. 2 - How many significant figures are understood for...Ch. 2 - Given that 1 mi = 1760 yd, determine what...Ch. 2 - Prob. 56QAPCh. 2 - For Exercises 57 and 58, apples cost $1.75 per...Ch. 2 - What conversion factor could be used to determine...Ch. 2 - Perform each of the following conversions, being...Ch. 2 - Perform each of the following conversions, being...Ch. 2 - Perform each of the following conversions, being...Ch. 2 - Perform each of the following conversions, being...Ch. 2 - 12.01 g of carbon contains6.021023 carbon atoms....Ch. 2 - Los Angeles and Honolulu are 2558 mi apart. What...Ch. 2 - The United States has high-speed trains running...Ch. 2 - The radius of an atom is on the order of1010 m....Ch. 2 - The temperature scale used in everyday life in...Ch. 2 - The point of water is at 32° on the Fahrenheit...Ch. 2 - Prob. 69QAPCh. 2 - The freezing point of water is _________ K.Ch. 2 - On both the Celsius and Kelvin temperature scales,...Ch. 2 - On which temperature scale (°F, °C, or K) does 1...Ch. 2 - Make the following temperature conversions: 44.2...Ch. 2 - Prob. 74QAPCh. 2 - Convert the following Fahrenheit temperatures to...Ch. 2 - Convert the following Celsius temperatures to...Ch. 2 - The “Chemistry in Focus” segmentTiny...Ch. 2 - Perform the indicated temperature conversions. 275...Ch. 2 - Prob. 79QAPCh. 2 - The most common units for density are ___________.Ch. 2 - A kilogram of lead occupies a much smaller volume...Ch. 2 - If a solid block of glass, with a volume of...Ch. 2 - Is the density of a gaseous substance likely to be...Ch. 2 - What property of density makes it useful as an aid...Ch. 2 - Referring to Table 2.8, which substance listed is...Ch. 2 - Referring to Table 2.8, determine whether...Ch. 2 - For the masses and volumes indicated, calculate...Ch. 2 - For the masses and volumes indicated, calculate...Ch. 2 - The element bromine at room temperature is a...Ch. 2 - Sunflower oil has a density of 0.920 g/mL. What is...Ch. 2 - If 1000. mL of linseed oil has a mass of 929 g....Ch. 2 - A material will float on the surface of a liquid...Ch. 2 - Iron has a density of 7.87 g/cm3. If 52.4 g of...Ch. 2 - The density of pure gold is 19.32 g/cm3 at 20 °C....Ch. 2 - Use the information in Table 2.8 to calculate the...Ch. 2 - Use the information in Table 2.8 to calculate the...Ch. 2 - 97. Indicate the number of significant digits in...Ch. 2 - Express each of the following as an “ordinary”...Ch. 2 - Write each of the following numbers in standard...Ch. 2 - Prob. 100APCh. 2 - Make the following conversions. 1 .25 in. to feet...Ch. 2 - On the planet Xgnu, the most common units of...Ch. 2 - You pass a road sign saying “New York 110 km.” If...Ch. 2 - Convert 45 mi/h to m/s, showing how the units...Ch. 2 - Suppose your car is rated at 45 mi/gal for highway...Ch. 2 - Prob. 106APCh. 2 - For a pharmacist dispensing pills or capsules, it...Ch. 2 - On the planet Xgnu, the natives have 14 fingers....Ch. 2 - For a material to float on the surface of water,...Ch. 2 - A gas cylinder having a volume of 10.5 L contains...Ch. 2 - Using Table 2.8, calculate the volume of 25.0 g of...Ch. 2 - Ethanol and benzene dissolve in each other. When...Ch. 2 - When 2891 is written in scientific notation, the...Ch. 2 - For each of the following numbers, if the number...Ch. 2 - For each of the following numbers, if the number...Ch. 2 - Prob. 116APCh. 2 - For each of the following numbers, by how many...Ch. 2 - For each of the following numbers, by how many...Ch. 2 - Express each of the following numbers in...Ch. 2 - Express each of the following as an “ordinary”...Ch. 2 - Prob. 121APCh. 2 - Prob. 122APCh. 2 - Prob. 123APCh. 2 - Draw a piece of lab glassware that can...Ch. 2 - Which distance is farther, 100 km or 50 mi?Ch. 2 - 1L= ________dm3= ________cm3= ________mLCh. 2 - The volume 0.250 L could also be expressed as mL.Ch. 2 - The distance 10.5 cm could also be expressed as m.Ch. 2 - Would an automobile moving at a constant speed of...Ch. 2 - Which weighs more, 0.001 g of water or 1 mg of...Ch. 2 - Which weighs more, 4.25 g of gold or 425 mg of...Ch. 2 - The length 500 m can also be expressed as nm.Ch. 2 - The ratio of an object’s mass to its is called the...Ch. 2 - You are working on a project where you need the...Ch. 2 - Indicate the number of significant figures in each...Ch. 2 - Prob. 136APCh. 2 - Round off each of the following numbers to the...Ch. 2 - Prob. 138APCh. 2 - Prob. 139APCh. 2 - Prob. 140APCh. 2 - Prob. 141APCh. 2 - Prob. 142APCh. 2 - Perform each of the following conversions, being...Ch. 2 - Perform each of the following conversions, being...Ch. 2 - The mean distance from the earth to (he sun ismi....Ch. 2 - Given that one metric ton = 1000 kg, how many...Ch. 2 - Convert the following temperatures to kelvins. 0°C...Ch. 2 - Carry out the indicated temperature conversions....Ch. 2 - For the masses and volumes indicated, calculate...Ch. 2 - A sample of a liquid solvent has a density of...Ch. 2 - An organic solvent has a density of 1.31 g/mL....Ch. 2 - A solid metal sphere has a volume of 4.2 ft3. The...Ch. 2 - A sample containing 33.42 g of metal pellets is...Ch. 2 - Prob. 154APCh. 2 - Prob. 155APCh. 2 - Prob. 156APCh. 2 - Prob. 157APCh. 2 - Prob. 158APCh. 2 - Complete the following table: Number Exponential...Ch. 2 - For each of the mathematical expressions given: a....Ch. 2 - The longest river in the world is the Nile River...Ch. 2 - Secretariat is known as the horse with the fastest...Ch. 2 - A friend tells you that it is 69. 1 °F outside....Ch. 2 - The hottest temperature recorded in the United...Ch. 2 - The density of osmium (the densest metal)...Ch. 2 - The radius of a neon atom is 69 pm, and its mass...
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Step by Step Stoichiometry Practice Problems | How to Pass ChemistryMole Conversions Made Easy: How to Convert Between Grams and Moles; Author: Ketzbook;https://www.youtube.com/watch?v=b2raanVWU6c;License: Standard YouTube License, CC-BY