D1.1 Concept of the mole and use in calculations involving: Pearson BTEC National Applied Science (AAQ) Questions

Practise d1.1 concept of the mole and use in calculations involving with Pearson BTEC National Applied Science (AAQ) questions and mark schemes. Revise D1.1 mass and molar mass (relative atomic mass or relative formula mass), D1.1 1 mole of any substance contains the same number of particles as there are atoms in 12.00g of carbon-12, D1.1 the number of particles in 1 mole is 6.02 x 1023 (known as the Avogadro constant).

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What to revise

• D1.1 mass and molar mass (relative atomic mass or relative formula mass)
• D1.1 1 mole of any substance contains the same number of particles as there are atoms in 12.00g of carbon-12
• D1.1 the number of particles in 1 mole is 6.02 x 1023 (known as the Avogadro constant)
• D1.1 convert moles into number of particles using the Avogadro constant (and the reverse)
• D1.1 the molar mass of a substance is the mass in grams of 1 mole of the substance (and is the same as the relative atomic mass or relative formula mass expressed in g mol-1)
• D1.1 perform calculations involving the mass of a substance, the number of moles and the molar mass
• D1.1 empirical formula and stochiometric ratios in equations
• D1.1 determine whether a reactant is a limiting reagent or in excess
• D1.1 calculate quantities of masses for substances reacting or produced, using balanced chemical equations, moles and molar mass
• D1.1 gas volume and molar volume (24dm3 at room temperature and pressure)
• D1.1 one mole of any gas occupies 24.0 dm3 at room temperature and pressure
• D1.1 at any given temperature and pressure one mole of any gas occupies the same volume
• D1.1 the molarity is the number of moles of a substance dissolved in water to produce a volume of 1 dm3 of a solution and has units of mol dm-3
• D1.1 perform calculations involving the concentration (molarity) of a solution, the number of moles and volume of the solution
• D1.1 perform calculations involving the concentration of a solution in g dm-3, the mass of the substance dissolved and volume of solution
• D1.1 percentage yield, actual yield and theoretical yield

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