Mole calculations

What is mole calculations?

Mole calculations convert between mass, moles and particles in chemistry. Core equations: n = m / Mr (moles from mass + relative formula mass), n = C × V (for solutions, with C in mol/dm³ and V in dm³), n = V / 24 (for gases at room temperature and pressure). Higher-tier GCSE Chemistry asks for mole ratios from balanced equations — read the equation as 'per mole of A, you need x moles of B'.