5. Mole Concept and Stoichiometry
The mole concept is essential for quantifying substances in chemistry, representing a fixed number of particles. It connects mass, moles, and particle numbers, with applications in various scientific fields. Stoichiometry uses balanced equations to establish relationships between reactants and products for accurate calculations.
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What we have learnt
- A mole is the SI unit for measuring the quantity of substance, equivalent to 6.022 × 10²³ particles.
- Molar mass relates the mass of a substance to the number of moles.
- Stoichiometry is crucial for understanding the quantitative relationships in chemical reactions.
Key Concepts
- -- Mole
- The SI unit used to measure the amount of a substance, containing 6.022 × 10²³ of its constituent particles.
- -- Molar Mass
- The mass of one mole of a substance, usually expressed in grams, which corresponds to the substance's atomic or molecular weight.
- -- Stoichiometry
- The branch of chemistry that deals with the calculation of reactants and products in chemical reactions.
- -- Limiting Reactant
- The reactant that is entirely consumed in a chemical reaction, thereby limiting the amount of product formed.
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