How Do I Calculate The Average Atomic Mass Class 11 Chemistry CBSE

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsHow do I calculate the average atomic mass?AnswerVerified527.1k+ viewsHint: To calculate the average atomic mass, multiply the fraction by the mass number for each isotope, then add them together. Whenever we do mass calculations involving elements or compounds, we always use average atomic masses.Complete step by step solution:The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance. Average atomic mass can be found on the periodic table.We have the formula to calculate the average atomic mass:$Avg.\,Atomic\,mass = \sum (isotope\,Mass \times Natural\,Abundance)$As for example: Consider the chlorine isotopes, chlorine -35 has a mass of \[34.969amu\] , while chlorine-37 has a mass of \[36.966{\text{ }}amu\] , if their natural abundance is \[75.77\% {\text{ }}and{\text{ }}24.23\% \] respectively, calculate their average atomic mass.So, first we will calculate the atomic mass of chlorine- 35:$ Chlorine - 35 \\ = 34.969 \times 0.7577 \\ = 26.50 \\ $And, $ Chlorine - 37 \\ = 36.966 \times 0.2423 \\ = 8.957 \\ $So, the average atomic mass is-$ \therefore Avg.\,atomic\,mass \\ = 26.50 + 8.957 \\ = 35.457amu \\ $Therefore, our average atomic mass is $35.457amu$ .Note: The atomic mass is the weighted average of the atomic masses of each isotope. In a weighted average, we multiply each value by a number representing its relative importance. It is one of the essential topic that is covered in chemistry. Recently Updated PagesMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 Economics: Engaging Questions & Answers for SuccessMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Maths: Engaging Questions & Answers for SuccessMaster Class 11 Biology: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 Economics: Engaging Questions & Answers for SuccessMaster Class 11 English: Engaging Questions & Answers for SuccessMaster Class 11 Maths: Engaging Questions & Answers for SuccessMaster Class 11 Biology: Engaging Questions & Answers for Success

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