BRAINCAKECalculations of Reacting Masses
A balanced equation gives the reacting ratio of moles of reactants and products or stoichiometry of a reaction. In a reaction, mass is conserved.
In the reaction
4 Al (s) + 3 O2 (g) → 2 Al2O3 (s)
4 moles of aluminium will react with 3 moles of oxygen gas to form 2 moles of aluminium oxide.
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Key terms in this lesson
- mole
- The amount of substance containing 6.02 x 10^23 particles, the same number as the atoms in 12 g of carbon-12.
More in Amount of Substance and Calculations
- Ionic Equations - Question1
- Ionic Equations - Question 2
- Ionic Equations - Question3
- Ionic Equations - Question 4
- Working out Equations from Reacting Masses
- Empirical Formula
- Percentage Composition by Mass
- Combustion Analysis
All 39 lessons in Amount of Substance and Calculations · All Edexcel AS-level Chemistry topics