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 captured during combustion.

H₂O mass (g)

Mass of H₂O captured during combustion.

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

C and H ratios

Mole ratios relative to the smallest value, rounded to two decimals.

• 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 CO2 and H2O Calculator

  Derive the empirical formula CₓHᵧ from combustion analysis CO₂ and H₂O masses normalized to whole-number ratios.

• Empirical Formula From Moles Calculator

  Compute empirical formula element ratios by dividing each element's mole amount by the smallest mole amount.

• Empirical Ratio Calculator

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