3. Formulae, Stoichiometry and the Mole Concept (5070) - Part 1

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📌Learn about Formulae, Stoichiometry and the Mole Concept
💥state the symbols of the elements and formulae of the compounds mentioned in the syllabus
💥 deduce the formulae of simple compounds from the relative numbers of atoms present and vice versa
💥deduce the formulae of ionic compounds from the charges on the ions present and vice versa
💥interpret and construct chemical equations, with state symbols, including ionic equations
💥define relative atomic mass, Ar
💥define relative molecular mass, Mr , and calculate relative molecular mass (and relative formula mass) as
the sum of relative atomic masses
💥calculate the percentage mass of an element in a compound when given appropriate information
💥calculate empirical and molecular formulae from relevant data
💥calculate stoichiometric reacting masses; use Avogadro’s law in calculations involving gas volume (on emole of gas occupies 24 dm3 at room temperature and pressure); calculations involving the idea of
limiting reactants may be set (questions on the gas laws and the calculations of gaseous volumes at different temperatures and pressures will not be set)
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