Chemical Stoichiometry & Mass Conservation

Chemical Equation Balancer & Stoichiometry Lab

Balance chemical reactions, determine limiting reactants, and calculate theoretical product yields in grams ($g$) and moles ($mol$) with atom-conservation proof vectors.

Select Chemical Reaction

Reactant Input MassesAdjust mass (g) to find limiting reagent

CH₄ (Methane)M = 16.04 g/mol

grams

O₂ (Oxygen gas)M = 32 g/mol

grams

Limiting Reactant Analysis

Determined Limiting Reagent

CH₄ (Methane)

This reactant will be completely consumed first, capping the reaction extent at 1.000 moles.

CH₄:1.000 mol inputLimiting

O₂:2.000 mol inputIn Excess

Stoichiometrically Balanced EquationConservation Verified

CH₄ + 2 O₂ → CO₂ + 2 H₂O

Exothermic complete combustion releasing 891 kJ/mol of thermal energy.

Theoretical Product Yields

CO₂Carbon dioxide

44.01 g

Yield: 1.000 moles (M = 44.01 g/mol)

H₂OWater

36.04 g

Yield: 2.000 moles (M = 18.02 g/mol)

Total Product Mass Synthesized:80.05 g

Law of Conservation of Mass (Atom Count)

CElement C Atoms

Reactants: 1 atomsProducts: 1 atoms

HElement H Atoms

Reactants: 4 atomsProducts: 4 atoms

OElement O Atoms

Reactants: 4 atomsProducts: 4 atoms

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