What is the oxidation state of each element in
Format: El: ±n, El: ±n. list every element in the thing
Balance this equation. Enter the coefficients left to right
Separate with commas, one number per compound in order
For half reactions you should probably make all the coefficients coprime (gcd = 1) but idk how oc wants it. For example, 2k → 2k+ + 2e− would be k → k+ + e− no matter the original equation.