Combustion Analysis Calculator
Empirical Formula:
Molecular Formula:
Moles (C,H,O,N):
Percent Composition:
Notes
From CO₂/H₂O: n(C) = m(CO₂)/44.01; n(H) = 2·m(H₂O)/18.015; if sample mass is provided, m(O) = m(sample) − m(C) − m(H).
Assumes only C, H, O, N are present. Enter others as zero. For molecular formula, supply molar mass.