Explanation A chemical formula represents the type of elements and the relative number of atoms or ions of each type in a compound. This information can be used to find out the amount of a specified element present in the given amount of compound in following ways: The chemical formula indicates the number of moles of atoms of each element in one mole of the compound that can be used as a conversion factor. For example, the chemical formula for methane, CH 4 , indicates that one mole of methane contains one mole of carbon atoms. 1 mol CH 4 : 1 mol C Calculate the number of moles of carbon atoms in the given amount of methane ( x mol CH 4 ) using the conversion factor as follows: x mol CH 4 × 1 mol C 1 mol CH 4 = x mol C Calculate the mass of carbon in grams in the given amount of methane ( x g CH 4 ) using the conversion factor as follows: x g CH 4 × 1 mol CH 4 16.04 g CH 4 × 1 mol C 1 mol CH 4 × 12.01 g C 1 mol C = ( x × 12.01 16.04 ) g C Mass percent of each type of element in a compound is called the mass percent composition of the compound

Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)

4th Edition

ISBN: 9780134162485

Author: Nivaldo J. Tro

Publisher: PEARSON

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Chapter 3, Problem 13E

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To explain: The method of determining the amount of a specified element present in the given amount of compound by using chemical formula with examples regarding the importance of the same.

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Chapter 3, Problem 12E

Chapter 3, Problem 14E

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Chapter 3 Solutions

Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)

Ch. 3 - What is the empirical formula of a compound with...Ch. 3 - Prob. 2SAQ Ch. 3 - Prob. 3SAQ Ch. 3 - Prob. 4SAQ Ch. 3 - Prob. 5SAQ Ch. 3 - Prob. 6SAQ Ch. 3 - Q7. Name the compound . a) phosphorus iodide b)...Ch. 3 - Prob. 8SAQ Ch. 3 - Prob. 9SAQ Ch. 3 - Prob. 10SAQ

Ch. 3 - Q11. Determine the mass of potassium in 35.5 g of...Ch. 3 - Prob. 12SAQ Ch. 3 - Prob. 13SAQ Ch. 3 - Prob. 14SAQ Ch. 3 - Prob. 15SAQ Ch. 3 - 1. How do the properties of compounds compare to...Ch. 3 - Prob. 2E Ch. 3 - Prob. 3E Ch. 3 - Prob. 4E Ch. 3 - Prob. 5E Ch. 3 - Prob. 6E Ch. 3 - Prob. 7E Ch. 3 - Prob. 8E Ch. 3 - Prob. 9E Ch. 3 - Prob. 10E Ch. 3 - Prob. 11E Ch. 3 - Prob. 12E Ch. 3 - Prob. 13E Ch. 3 - Prob. 14E Ch. 3 - Prob. 15E Ch. 3 - Prob. 16E Ch. 3 - Prob. 17E Ch. 3 - Prob. 18E Ch. 3 - Prob. 19E Ch. 3 - Prob. 20E Ch. 3 - Prob. 21E Ch. 3 - 22. Write a generic formula for each of the...Ch. 3 - 23. Determine the number of each type of atom in...Ch. 3 - Prob. 24E Ch. 3 - Prob. 25E Ch. 3 - 26. Write a chemical formula for each molecular...Ch. 3 - Prob. 27E Ch. 3 - Prob. 28E Ch. 3 - 29. Classify each compound as ionic or...Ch. 3 - 30. Classify each compound as ionic or...Ch. 3 - 31. Based on the molecular views, classify each...Ch. 3 - 32. Based on the molecular views, classify each...Ch. 3 - 33. Write a formula for the ionic compound that...Ch. 3 - Prob. 34E Ch. 3 - Prob. 35E Ch. 3 - Prob. 36E Ch. 3 - Prob. 37E Ch. 3 - 38. Name each ionic compound. a. SnCl4 b. PbI2 c....Ch. 3 - 39. Give each ionic compound an appropriate...Ch. 3 - 40. Give each ionic compound an appropriate...Ch. 3 - Prob. 41E Ch. 3 - Prob. 42E Ch. 3 - Prob. 43E Ch. 3 - Prob. 44E Ch. 3 - Prob. 45E Ch. 3 - Prob. 46E Ch. 3 - Prob. 47E Ch. 3 - 48. Name each molecular compound. a. SO3 b. SO2 c....Ch. 3 - Prob. 49E Ch. 3 - 50. Write the formula for each molecular...Ch. 3 - Prob. 51E Ch. 3 - 52. Name each acid. a. HCl(aq) b. HClO2(aq) c....Ch. 3 - Prob. 53E Ch. 3 - 54. Write the formula for each acid. a. phosphoric...Ch. 3 - Prob. 55E Ch. 3 - Prob. 56E Ch. 3 - Prob. 57E Ch. 3 - 58. Refer to the nomenclature flowchart (Figure...Ch. 3 - 59. Calculate the formula mass for each...Ch. 3 - Prob. 60E Ch. 3 - 61. Calculate the number of moles in each...Ch. 3 - 62. Calculate the mass of each sample. a. 15.7 mol...Ch. 3 - 63. Determine the number of moles (of molecules or...Ch. 3 - Prob. 64E Ch. 3 - Prob. 65E Ch. 3 - 66. How many molecules (or formula units) are in...Ch. 3 - 67. Calculate the mass (in g) of each sample. a....Ch. 3 - Prob. 68E Ch. 3 - 69. A sugar crystal contains approximately 1.8 ×...Ch. 3 - Prob. 70E Ch. 3 - 71. Calculate the mass percent composition of...Ch. 3 - Prob. 72E Ch. 3 - Prob. 73E Ch. 3 - 74. Iron in the earth is in the form of iron ore....Ch. 3 - 75. Copper(II) fluoride contains 37.42% F by mass....Ch. 3 - Prob. 76E Ch. 3 - 77. The iodide ion is a dietary mineral essential...Ch. 3 - 78. The American Dental Association recommends...Ch. 3 - 79. Write a ratio showing the relationship between...Ch. 3 - Prob. 80E Ch. 3 - Prob. 81E Ch. 3 - Prob. 82E Ch. 3 - Prob. 83E Ch. 3 - 84. Calculate the mass (in kilograms) of chlorine...Ch. 3 - Prob. 85E Ch. 3 - Prob. 86E Ch. 3 - 87. A chemist decomposes samples of several...Ch. 3 - 88. A chemist decomposes samples of several...Ch. 3 - 89. Calculate the empirical formula for each...Ch. 3 - 90. Calculate the empirical formula for each...Ch. 3 - 91. The elemental mass percent composition of...Ch. 3 - 92. The elemental mass percent composition of...Ch. 3 - 93. A 0.77-mg sample of nitrogen reacts with...Ch. 3 - 94. A 45.2-mg sample of phosphorus reacts with...Ch. 3 - 95. From the given empirical formula and molar...Ch. 3 - 96. From the given molar mass and empirical...Ch. 3 - 97. Combustion analysis of a hydrocarbon produces...Ch. 3 - Prob. 98E Ch. 3 - Prob. 99E Ch. 3 - 100. Tartaric acid is the white, powdery substance...Ch. 3 - Prob. 101E Ch. 3 - Prob. 102E Ch. 3 - Prob. 103E Ch. 3 - 104. When iron rusts, solid iron reacts with...Ch. 3 - Prob. 105E Ch. 3 - Prob. 106E Ch. 3 - Prob. 107E Ch. 3 - 108. Write the balanced chemical equation for each...Ch. 3 - Prob. 109E Ch. 3 - Prob. 110E Ch. 3 - 111. Balance each chemical equation. a. CO2(g) +...Ch. 3 - 112. Balance each chemical equation. a. Na2S(aq) +...Ch. 3 - Prob. 113E Ch. 3 - Prob. 114E Ch. 3 - Prob. 115E Ch. 3 - Prob. 116E Ch. 3 - Prob. 117E Ch. 3 - Prob. 118E Ch. 3 - Prob. 119E Ch. 3 - Prob. 120E Ch. 3 - 121. How many molecules of ethanol (C2H5OH) (the...Ch. 3 - 122. A drop of water has a volume of approximately...Ch. 3 - 123. Determine the chemical formula of each...Ch. 3 - 124. Determine the chemical formula of each...Ch. 3 - Prob. 125E Ch. 3 - Prob. 126E Ch. 3 - 127. A metal (M) forms a compound with the formula...Ch. 3 - Prob. 128E Ch. 3 - 129. Estradiol is a female sexual hormone that is...Ch. 3 - 130. Fructose is a common sugar found in fruit....Ch. 3 - 131. Combustion analysis of a 13.42-g sample of...Ch. 3 - 132. Estrone, which contains only carbon,...Ch. 3 - 133. Epsom salts is a hydrated ionic compound with...Ch. 3 - 134. A hydrate of copper(II) chloride has the...Ch. 3 - Prob. 135E Ch. 3 - Prob. 136E Ch. 3 - Prob. 137E Ch. 3 - Prob. 138E Ch. 3 - Prob. 139E Ch. 3 - Prob. 140E Ch. 3 - Prob. 141E Ch. 3 - 142. A phosphorus compound that contains 34.00%...Ch. 3 - Prob. 143E Ch. 3 - 144. Phosphorus is obtained primarily from ores...Ch. 3 - Prob. 145E Ch. 3 - Prob. 146E Ch. 3 - Prob. 147E Ch. 3 - Prob. 148E Ch. 3 - 149. Because of increasing evidence of damage to...Ch. 3 - Prob. 150E Ch. 3 - 151. Lead is found in Earth's crust as several...Ch. 3 - Prob. 152E Ch. 3 - 153. A compound of molar mass 229 g/mol contains...Ch. 3 - Prob. 154E Ch. 3 - Prob. 155E Ch. 3 - Prob. 156E Ch. 3 - 157. When molecules are represented by molecular...Ch. 3 - Prob. 158E Ch. 3 - Prob. 159E Ch. 3 - Prob. 160E Ch. 3 - 161. Without doing any calculations, arrange the...Ch. 3 - Prob. 162E Ch. 3 - Prob. 163QGW Ch. 3 - Prob. 164QGW Ch. 3 - Prob. 165QGW Ch. 3 - 166. A compound isolated from the rind of lemons...Ch. 3 - Prob. 167QGW Ch. 3 - 168. Since the 1800s, the concentration of carbon...

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