Chemical Equation Balancer
Chemistry Tools · Constants · Periodic Reference
Equation Balancer
H2 + O2 → H2O CH4 + O2 → CO2 + H2O Fe + O2 → Fe2O3 NaOH + HCl → NaCl + H2O C3H8 + O2 → CO2 + H2O
Use element symbols with numbers. Separate reactants and products with → or ->. Use + between compounds.
Chemical Constants
Avogadro's Number
6.022 × 10²³
NA (mol⁻¹)
Gas Constant
8.314 J/(mol·K)
R
Faraday Constant
96,485 C/mol
F
Boltzmann
1.381 × 10⁻²³ J/K
kB
Planck's Constant
6.626 × 10⁻³⁴ J·s
h
STP Molar Volume
22.4 L/mol
Vm
Common Elements Reference
H
1
He
2
Li
3
C
6
N
7
O
8
Na
11
Cl
17
Fe
26