Chemistry: Matter and Change
1st Edition
ISBN: 9780078746376
Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher: Glencoe/McGraw-Hill School Pub Co
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Question
Chapter 10.4, Problem 69SSC
Interpretation Introduction
Interpretation:
The empirical formula of the oxide which contains 0.545 g Al and 0.485 g O needs to be determined.
Concept introduction:
Empirical formula is the simplest formula of any organic or inorganic compound that represents the simple ratio of all atoms present in the molecule. It can be calculated with the help of elemental composition of molecule. Certain steps must be used to get the empirical formula:
- Consider mass % as mass in grams and calculate moles of element with the help of molar mass
- Calculate the moles of each element in least whole number
- Write the number of each atom as subscript to write the empirical formula.
Expert Solution & Answer
Answer to Problem 69SSC
The empirical formula must be Al2O3
Explanation of Solution
Given information:
Mass of Al = 0.545 g
Mass of O = 0.485 g
Molar mass of Al = 26.98 g/mol
Molar mass of O = 15.99 g/mol
Calculate moles of Al and O:
Al = 0.545g26.98g/mol= 0.020 molesO = 0.485 g15.99 g/mol= 0.030 moles
Divide with least moles to get the whole number:
Al = 0.020 moles0.020 moles= 1×2=2O = 0.030 moles0.020 moles= 1.5×2=3
Thus the empirical formula must be Al2O3
Conclusion
The empirical formula must be Al2O3
Chapter 10 Solutions
Chemistry: Matter and Change
Ch. 10.1 - Prob. 1PPCh. 10.1 - Prob. 2PPCh. 10.1 - Prob. 3PPCh. 10.1 - Prob. 4PPCh. 10.1 - Prob. 5PPCh. 10.1 - Prob. 6PPCh. 10.1 - Prob. 7SSCCh. 10.1 - Prob. 8SSCCh. 10.1 - Prob. 9SSCCh. 10.1 - Prob. 10SSC
Ch. 10.1 - Prob. 11SSCCh. 10.1 - Prob. 12SSCCh. 10.1 - Prob. 13SSCCh. 10.1 - Prob. 14SSCCh. 10.2 - Prob. 15PPCh. 10.2 - Prob. 16PPCh. 10.2 - Prob. 17PPCh. 10.2 - Prob. 18PPCh. 10.2 - Prob. 19PPCh. 10.2 - Prob. 20PPCh. 10.2 - Prob. 21PPCh. 10.2 - Prob. 22SSCCh. 10.2 - Prob. 23SSCCh. 10.2 - Prob. 24SSCCh. 10.2 - Prob. 25SSCCh. 10.2 - Prob. 26SSCCh. 10.2 - Prob. 27SSCCh. 10.2 - Prob. 28SSCCh. 10.3 - Prob. 29PPCh. 10.3 - Prob. 30PPCh. 10.3 - Prob. 31PPCh. 10.3 - Prob. 32PPCh. 10.3 - Prob. 33PPCh. 10.3 - Prob. 34PPCh. 10.3 - Prob. 35PPCh. 10.3 - Prob. 36PPCh. 10.3 - Prob. 37PPCh. 10.3 - Prob. 38PPCh. 10.3 - Prob. 39PPCh. 10.3 - Prob. 40PPCh. 10.3 - Prob. 41PPCh. 10.3 - Prob. 42PPCh. 10.3 - Prob. 43PPCh. 10.3 - Prob. 44PPCh. 10.3 - Prob. 45PPCh. 10.3 - Prob. 46PPCh. 10.3 - Prob. 47SSCCh. 10.3 - Prob. 48SSCCh. 10.3 - Prob. 49SSCCh. 10.3 - Prob. 50SSCCh. 10.3 - Prob. 51SSCCh. 10.3 - Prob. 52SSCCh. 10.3 - Prob. 53SSCCh. 10.4 - Prob. 54PPCh. 10.4 - Prob. 55PPCh. 10.4 - Prob. 56PPCh. 10.4 - Prob. 57PPCh. 10.4 - Prob. 58PPCh. 10.4 - Prob. 59PPCh. 10.4 - Prob. 60PPCh. 10.4 - Prob. 61PPCh. 10.4 - Prob. 62PPCh. 10.4 - Prob. 63PPCh. 10.4 - Prob. 64PPCh. 10.4 - Prob. 65PPCh. 10.4 - Prob. 66PPCh. 10.4 - Prob. 67SSCCh. 10.4 - Prob. 68SSCCh. 10.4 - Prob. 69SSCCh. 10.4 - Prob. 70SSCCh. 10.4 - Prob. 71SSCCh. 10.4 - Prob. 72SSCCh. 10.4 - Prob. 73SSCCh. 10.5 - Prob. 74PPCh. 10.5 - Prob. 75PPCh. 10.5 - Prob. 76SSCCh. 10.5 - Prob. 77SSCCh. 10.5 - Prob. 78SSCCh. 10.5 - Prob. 79SSCCh. 10.5 - Prob. 80SSCCh. 10.5 - Prob. 81SSCCh. 10.5 - Prob. 82SSCCh. 10 - Prob. 83ACh. 10 - Prob. 84ACh. 10 - Prob. 85ACh. 10 - Prob. 86ACh. 10 - Prob. 87ACh. 10 - Prob. 88ACh. 10 - Prob. 89ACh. 10 - Determine the number of representative particles...Ch. 10 - Determine the number of representative particles...Ch. 10 - Prob. 92ACh. 10 - Determine the number of moles in each substance....Ch. 10 - Prob. 94ACh. 10 - Prob. 95ACh. 10 - RDA of Selenium The recommended daily allowance...Ch. 10 - Prob. 97ACh. 10 - Prob. 98ACh. 10 - Prob. 99ACh. 10 - Prob. 100ACh. 10 - Prob. 101ACh. 10 - Prob. 102ACh. 10 - Prob. 103ACh. 10 - Prob. 104ACh. 10 - Prob. 105ACh. 10 - Prob. 106ACh. 10 - Prob. 107ACh. 10 - Calculate the mass of each element. a. 5.22 mol of...Ch. 10 - Perform the following conversions. a. 3.50 mol of...Ch. 10 - Determine the mass in grams of each element....Ch. 10 - Complete Table 10.3.Ch. 10 - Convert each to mass in grams. a. 4.221015 atoms c...Ch. 10 - Prob. 113ACh. 10 - Prob. 114ACh. 10 - Prob. 115ACh. 10 - Prob. 116ACh. 10 - Prob. 117ACh. 10 - Prob. 118ACh. 10 - Prob. 119ACh. 10 - Prob. 120ACh. 10 - Prob. 121ACh. 10 - Prob. 122ACh. 10 - Prob. 123ACh. 10 - Prob. 124ACh. 10 - Prob. 125ACh. 10 - Prob. 126ACh. 10 - Prob. 127ACh. 10 - Prob. 128ACh. 10 - Prob. 129ACh. 10 - Prob. 130ACh. 10 - Prob. 131ACh. 10 - Prob. 132ACh. 10 - Prob. 133ACh. 10 - Prob. 134ACh. 10 - Prob. 135ACh. 10 - Prob. 136ACh. 10 - Prob. 137ACh. 10 - Prob. 138ACh. 10 - Prob. 139ACh. 10 - Prob. 140ACh. 10 - Prob. 141ACh. 10 - Prob. 142ACh. 10 - Prob. 143ACh. 10 - Prob. 144ACh. 10 - Prob. 145ACh. 10 - Prob. 146ACh. 10 - Prob. 147ACh. 10 - Pain Relief Acetaminophen, a common aspirin...Ch. 10 - Prob. 149ACh. 10 - Prob. 150ACh. 10 - Prob. 151ACh. 10 - Prob. 152ACh. 10 - Prob. 153ACh. 10 - Prob. 154ACh. 10 - Prob. 155ACh. 10 - Prob. 156ACh. 10 - Prob. 157ACh. 10 - Prob. 158ACh. 10 - Prob. 159ACh. 10 - Prob. 160ACh. 10 - Prob. 161ACh. 10 - Prob. 162ACh. 10 - Express the composition of each compound as the...Ch. 10 - VitaminD3 Your body's ability to absorb calcium is...Ch. 10 - Prob. 165ACh. 10 - Cholesterol Heart disease is linked to high blood...Ch. 10 - Prob. 167ACh. 10 - Prob. 168ACh. 10 - Prob. 169ACh. 10 - Prob. 170ACh. 10 - Prob. 171ACh. 10 - Prob. 172ACh. 10 - Prob. 173ACh. 10 - Prob. 174ACh. 10 - Prob. 175ACh. 10 - Prob. 176ACh. 10 - Prob. 177ACh. 10 - Prob. 178ACh. 10 - Prob. 179ACh. 10 - Determine the mass percent of anhydrous sodium...Ch. 10 - Table 4 shows data from an experiment to determine...Ch. 10 - Chromium(lll) nitrate forms a hydrate that is...Ch. 10 - Determine the percent composition of MgCO35H2O and...Ch. 10 - What is the formula and name of a hydrate that is...Ch. 10 - Gypsum is hydrated calcium sulfate. A 4.89-g...Ch. 10 - A 1.628-g sample of a hydrate of magnesium iodide...Ch. 10 - Borax Hydrated sodiumtetraborate (Na2B4O7xH2O) is...Ch. 10 - Prob. 188ACh. 10 - Prob. 189ACh. 10 - Prob. 190ACh. 10 - Prob. 191ACh. 10 - Prob. 192ACh. 10 - Prob. 193ACh. 10 - Prob. 194ACh. 10 - Prob. 195ACh. 10 - Prob. 196ACh. 10 - Prob. 197ACh. 10 - Prob. 198ACh. 10 - Prob. 199ACh. 10 - Prob. 200ACh. 10 - Prob. 201ACh. 10 - Prob. 202ACh. 10 - Prob. 203ACh. 10 - Prob. 204ACh. 10 - Prob. 205ACh. 10 - Prob. 206ACh. 10 - Prob. 207ACh. 10 - Prob. 208ACh. 10 - Prob. 209ACh. 10 - Prob. 210ACh. 10 - Prob. 211ACh. 10 - Prob. 212ACh. 10 - Prob. 213ACh. 10 - Prob. 214ACh. 10 - Prob. 215ACh. 10 - Prob. 216ACh. 10 - Prob. 1STPCh. 10 - Prob. 2STPCh. 10 - Prob. 3STPCh. 10 - Prob. 4STPCh. 10 - Prob. 5STPCh. 10 - Prob. 6STPCh. 10 - Prob. 7STPCh. 10 - Prob. 8STPCh. 10 - Prob. 9STPCh. 10 - Prob. 10STPCh. 10 - Prob. 11STPCh. 10 - Prob. 12STPCh. 10 - Prob. 13STPCh. 10 - Prob. 14STPCh. 10 - Prob. 15STPCh. 10 - Prob. 16STP
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