Atoms and Molecules
NIOS · Class 10 · Science & Tech
All formulas from Atoms and Molecules in NIOS Class 10 Science & Tech. Key equations, constants, and identities for board exam preparation.
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Laws of Chemical Combination
Total mass of reactants = Total mass of products
% of element = (Mass of element/Total mass) × 100
Dalton's Atomic Theory
Atomic Mass and Isotopes
Average atomic mass = Σ(isotope mass × abundance)/100
Mass number (A) = Protons + Neutrons
Molecules and Molecular Mass
Molecular mass = Σ(atomic mass × number of atoms)
Formula mass = Σ(atomic mass × number of atoms)
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