Calculate relative formula mass given relative atomic masses
Calculate relative formula mass given relative atomic masses
Calculate the formulae of simple compounds from reacting masses or percentage composition and understand that these are empirical formulae
Deduce:
a) the empirical formula of a compound from the formula of its molecule b) the molecular formula of a compound from its empirical formula and its relative molecular mass
Describe an experiment to determine the empirical formula of a simple compound such as magnesium oxide
Explain the law of conservation of mass applied to:
a) a closed system including a precipitation reaction in a closed flask b) a non-enclosed system including a reaction in an open flask that takes in or gives out a gas
Calculate masses of reactants and products from balanced equations, given the mass of one substance
Calculate the concentration of solutions in g dm-3
**Recall that one mole of particles of a substance is defined as:
a) the Avogadro constant number of particles (6.02 × 1023 atoms, molecules, formulae or ions) of that substance b) a mass of 'relative particle mass' g**
**Calculate the number of:
a) moles of particles of a substance in a given mass of that substance and vice versa b) particles of a substance in a given number of moles of that substance and vice versa c) particles of a substance in a given mass of that substance and vice versa**
Explain why, in a reaction, the mass of product formed is controlled by the mass of the reactant which is not in excess
Deduce the stoichiometry of a reaction from the masses of the reactants and products