Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

CO₂ mass (g)

Mass of CO₂ produced.

H₂O mass (g)

Mass of H₂O produced.

Derive the empirical formula CₓHᵧ from combustion analysis CO₂ and H₂O masses normalized to whole-number ratios. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Subscripts

Whole-number subscripts for C and H.

• Stoichiometric results assume the balanced reaction, stated purity, and complete conversion to the selected products. Yield, selectivity, side reactions, moisture, and measurement uncertainty must be handled separately.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

• Empirical Formula From Combustion Calculator

  Derive C:H mole ratios from combustion CO₂ and H₂O masses, normalized to the smallest amount.

• Empirical Ratio Calculator

  Divide two element mole amounts by the smaller one to obtain whole-number-friendly empirical ratios.

• Combustion Carbon Mass Calculator

  Compute the carbon contained in a burned sample from the CO₂ collected during combustion analysis.