ChemistryScalar QuantityNCTB রসায়ন অধ্যায় ৬ (মোলের ধারণা ও রাসায়নিক গণনা)
Molar Mass
Bengali: মোলার ভর•Pronunciation: মোলার মাস•Symbol: M
Standard Definition:
The mass of a given chemical substance divided by the amount of substance, expressed in grams per mole (g/mol).
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
kg/mol (practical: g/mol)($kg/mol$ (ব্যবহারিক: $g/mol$))
Dimensional Analysis
CGS Unit
g/mol
📖 Physical Concept & Comprehensive Explanation
Calculated by summing the relative atomic masses of all constituent atoms in a chemical formula. For crystal hydrates like copper sulfate pentahydrate (CuSO4*5H2O), waters of crystallization are factored into total molar mass.
🎯 High-Yield Revision Points
- ✓Numerically equal to formula weight expressed in g/mol.
- ✓Crucial for calculating solution molarity and limiting reactants.
- ✓Accounts for waters of crystallization in hydrates.
Use Online Solver for Molar Mass
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❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: What is the molar mass of blue vitriol (CuSO4*5H2O)?
The molar mass of copper sulfate pentahydrate is approximately 249.68 g/mol.