Chemistry (AS Level)·Atoms, molecules & stoichiometry · NSSCAS 1.1.4
Empirical & molecular formulae
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From raw lab data to a real formula. Learn the difference between an empirical and a molecular formula, then calculate both — from percentage composition by mass and from combustion data — using the mole as your counting tool.
What you'll learn in this lesson
By the end you should be able to (NSSCAS Chemistry (AS Level) 1.1.4):
- Define and use the terms empirical and molecular formula
- Calculate empirical and molecular formulae using combustion data or composition by mass
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