CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
14th Edition
ISBN: 9780134863016
Author: Brown
Publisher: PEARSON
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Chapter 2, Problem 42E

Locate each of the following elements in the pen‘odlc table; grve its name and atomic number,
and indicate whether It IS a metal, metalloid, or nonmetal:

a. Li,

b. Sc,

c. Ge,

d. Yb,

e. Mn,

f. Sb,

9. Xe

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Students have asked these similar questions
10. Platinum has six isotopes: 190Pt, 192Pt, 194Pt, 195Pt, 196Pt, and 198Pt. The natural abundances of the six isotopes are 0.014% ¹⁹⁰Pt (189.96 amu); 0.782% ¹⁹²Pt (191.96 amu); 32.967% ¹⁹4Pt (193.96 amu); 33.832% ¹95Pt (194.97 amu); 25.242% ¹9Pt (195.97 amu); and 7.163% ¹98Pt (197.97 amu). Calculate the average atomic mass of platinum and compare it with the value on the periodic table.
9. Lithium hydroxide crystals are used in manned space vehicles to remove carbon dioxide gas from the air exhaled by the astronauts. The symbolic equation for this reaction is 2LIOH + CO₂ → Li₂CO3 + H₂O a. The formula and charge of a lithium ion is Lit Deduce the formula and charge of the carbonate ion. Explain your answer. b. A space vehicle carries a crew of 7 astronauts. Each astronaut exhales 18 moles of carbon dioxide every day. Calculate the total number of moles of carbon dioxide that the crew will exhale during a mission into space which lasts 10 days. Show your working. c. Calculate the mass of lithium hydroxide crystals which must be loaded on board the space vehicle to react with all the carbon dioxide exhaled during the mission. Show your working.
As we saw in the previous problem, lithium has two naturally occurring isotopes: Li-6 (natural abundance 7.5%; mass 6.0151 amu) and Li-7 (natural abundance 92.5%; mass7.0160 amu). Without doing any calculations, determine which mass is closest to the atomic mass of Li. a. 6.00 amu b. 6.50 amu c. 7.00 amu

Chapter 2 Solutions

CHEMISTRY THE CENTRAL SCIENCE 14TH EDI

Ch. 2.6 - Practice Exercise 1 Tetra carbon dioxide is an...Ch. 2.6 - Practice Exercise 2 Give the empirical formula for...Ch. 2.7 - Practice Exercise 1 In which of the following...Ch. 2.7 - Practice Exercise 2 How many protons, neutrons,...Ch. 2.7 - Practice Exercise 1 Although it is helpful to...Ch. 2.7 - Prob. 2.8.2PECh. 2.7 - Prob. 2.9.1PECh. 2.7 - Prob. 2.9.2PECh. 2.7 - Prob. 2.10.1PECh. 2.7 - Practice Exercise 2 Write the empirical formula...Ch. 2.8 - Practice Exercise 1 Which of the follow-mg ox...Ch. 2.8 - Prob. 2.11.2PECh. 2.8 - Prob. 2.12.1PECh. 2.8 - Prob. 2.12.2PECh. 2.8 - Prob. 2.13.1PECh. 2.8 - Prob. 2.13.2PECh. 2.8 - Prob. 2.14.1PECh. 2.8 - Practice Exercise 2 Give the chemical fomi uias...Ch. 2.9 - Prob. 2.15.1PECh. 2.9 - Prob. 2.15.2PECh. 2 - Prob. 1ECh. 2 - The followmg diagram is a representation of 20...Ch. 2 - 2 3 Four of the boxes in the following periodic...Ch. 2 - 24 Does the following drawing represent a neutral...Ch. 2 - 2.5 Which of the following diagrams most likely...Ch. 2 - Write the chemical formula for the following...Ch. 2 - Prob. 7ECh. 2 - Prob. 8ECh. 2 - 2.9 Are these two compounds isomers? Explain....Ch. 2 - 2.10 In the Millikan oil-drop experiment (see...Ch. 2 - A 1.0-g sample of carbon dioxide (002) is fully...Ch. 2 - Hydrogen sulfide is composed of two elements:...Ch. 2 - A chemist finds that 30.82 g of nitrogen will...Ch. 2 - 2 . 14 In a series at exper'ments. a chemist...Ch. 2 - 215 Which of the three subatomic particles was...Ch. 2 - 2.16 An unknown particle is caused to move between...Ch. 2 - 2.17 What fraction of α particle in Rutherford’s...Ch. 2 - it 18 Millikan determined the charge on the...Ch. 2 - The radius of an atom of gold (Au) is about 1.35 Å...Ch. 2 - 220 An atom of rhodium (Rh) has a diameter of...Ch. 2 - 2.21 Answer the following questions without...Ch. 2 - Determine whether each of the following statements...Ch. 2 - Consider an atom of "B. a. How many protons,...Ch. 2 - Consider an atom of 63Cu. a. How many protons,...Ch. 2 - 2.25 3. Define atomic number and mass number b....Ch. 2 - 2 26 Which two of the following are isotopes of...Ch. 2 - How many ptotons, neutrons, and electrons are in...Ch. 2 - 2-28 Each of the following isotopes is used in...Ch. 2 - Prob. 29ECh. 2 - Fill in the gaps in the following table, assuming...Ch. 2 - Write the correct symbol, with both superscript...Ch. 2 - One way in which Earth's evolution as a planet can...Ch. 2 - 2.33 a. What isotope is used as the standard in...Ch. 2 - 2.34 a. What is the mass in amu of a carbon-12...Ch. 2 - Only two isotopes of copper occur naturally:63Cu...Ch. 2 - 2.36 Rubidium has two naturally occurring...Ch. 2 - a. Thomson’s cathode-ray tube (Figure 2.49) and...Ch. 2 - 2.38 Consider the mass spectrometer shown in...Ch. 2 - Naturally occurring magnesium has the following...Ch. 2 - Mass spectrometry is more often applied to...Ch. 2 - 2-41 For each of the following elements, write its...Ch. 2 - Locate each of the following elements in the...Ch. 2 - 2-43 For each of the following elements, write its...Ch. 2 - 2.44 The elements of group 4A show an interesting...Ch. 2 - 2.45 The structural formulas of the compounds...Ch. 2 - 2.46 Ball-and-stick representations of benzene, a...Ch. 2 - 2447 What are the molecular and empirical formulas...Ch. 2 - 2.48 Two substances have the same molecular and...Ch. 2 - 2.49 Write the empirical formula corresponding to...Ch. 2 - Determine the molecular and empirical formulas of...Ch. 2 - 251 How many hydrogen atoms are un each of the...Ch. 2 - Prob. 52ECh. 2 - 253 Write the molecular and structural formulas...Ch. 2 - 2-54 Write the molecular and structural formulas...Ch. 2 - Fill in the gaps in the following table’Ch. 2 - 2.56 Fill in the gaps in the following...Ch. 2 - Each of the following elements is capable of...Ch. 2 - Using the periodic table, predict the charges of...Ch. 2 - 2.59 Using the periodic table to guide you,...Ch. 2 - 2-60 The most common charge associated with...Ch. 2 - 2.61 Predict the chemical formula for the ionic...Ch. 2 - Predict the chemical formulas of the compounds...Ch. 2 - Prob. 63ECh. 2 - Prob. 64ECh. 2 - Predict whether each of the following compounds is...Ch. 2 - 2.66 Which of the following are ionic, and which...Ch. 2 - Prob. 67ECh. 2 - Prob. 68ECh. 2 - 2.69 Give the names and charges of the cation and...Ch. 2 - Give the names and charges of the cation and anion...Ch. 2 - 2.71 Name the following ionic compounds: a....Ch. 2 - Prob. 72ECh. 2 - 2.73 Write the chemical formulas for the...Ch. 2 - Give the chemical formula for each of the...Ch. 2 - 2.75 Give the name or chemical formula, as...Ch. 2 - Prob. 76ECh. 2 - 2.T Give the name or Chemical formula, as...Ch. 2 - The oxides of nitrogen are very important...Ch. 2 - Prob. 79ECh. 2 - Assume that you encounter the following sentences...Ch. 2 - a. What is a hydrocarbon? b. Pentane is the alkane...Ch. 2 - 2.82 a. What is meant by the term isomer? b. Among...Ch. 2 - 2.83 What is a functional group? What functional...Ch. 2 - 2.84 Consider the following organic substances:...Ch. 2 - 2.85 Chloropropane is derived from propane by...Ch. 2 - 2.86 Draw the structural formulas for three...Ch. 2 - Suppose a scientist repeats the Millikan oil-drop...Ch. 2 - 2.88 The natural abundance of 3He is...Ch. 2 - A cube of gold that is 1.00 cm on a side has a...Ch. 2 - 2.90 The diameter of a rubidium atom is 4.95 A....Ch. 2 - 2.91 Assuming the dimensions of the nucleus and...Ch. 2 - 2.92 Identify the element reoresented by the each...Ch. 2 - 2.93 The nucleus of 6Li is a powerful absorber of...Ch. 2 - The element oxygen has three naturally occurring...Ch. 2 - The element lead (Pb) consists of four naturally...Ch. 2 - 2.96 Gallium (Ga) consists of two naturally...Ch. 2 - Using a suitable reference such as the CRC...Ch. 2 - There are two different isotopes of bromine atoms....Ch. 2 - 2.99 It is common in mass spectrometry to assume...Ch. 2 - From the following list of elements—Ar, H, Ga, Al,...Ch. 2 - 2.101 The first atoms of seaborgium (Sg) were...Ch. 2 - 2.102 The explosion of an atomic bomb releases...Ch. 2 - 2.103. A U.S. 1-cent coin (a penny) has a...Ch. 2 - 2.104 The U.S. Mint produces a dollar coin called...Ch. 2 - 2.105 From the molecular structures shown here,...Ch. 2 - 2.106 Name each of the following oxides. Assuming...Ch. 2 - Prob. 107AECh. 2 - 2.108 Cyclopropane is an interesting hydrocarbon....Ch. 2 - Prob. 109AECh. 2 - Prob. 110AECh. 2 - Give the chemical names of each of the following...Ch. 2 - 2.112 Many familiar substances have common,...Ch. 2 - 2.113 Because many ions and compounds have very...Ch. 2 - 2.114 In what part of the atom does the strong...
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