20.1—Deduce the empirical formulae, molecular formulae and structural formulae from data drawn from combustion analysis, element

Be able to deduce the empirical formulae, molecular formulae and structural formulae from data drawn from combustion analysis, element percentage composition, characteristic reactions of functional groups, infrared spectra, mass spectra and NMR spectra (both 13C and proton).

Use —deduce the empirical formulae, molecular formulae and structural formulae from data drawn from combustion analysis, element to connect the rule to the data and decision in the question.

This matters because —deduce the empirical formulae, molecular formulae and structural formulae from data drawn from combustion analysis, element determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —deduce the empirical formulae, molecular formulae and structural formulae from data drawn from combustion analysis, element to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: use the formula and units given in the question, show the substitution and interpret the result; the calculation alone is not the conclusion.