Determine the total sum of the coefficients after balancing the following equation.
___ C₂H₅SH (g) + ___ O₂ (g) → ___ CO₂ (g) + ___ H₂O (l) + ___ SO₂ (g)

___ Ba(OH)₂ + ___ H₃PO₄ → ___ H₂O + ___ Ba₃(PO₄)₂

___NaOH (aq) + ___ H₃PO₄(aq) → ___ H₂O(l) + ___ Na₃PO₄(aq)

Write the balanced equation for the following by inserting the correct coefficients in the blanks.

___ Al₄C₃ (s) + ___ H₂O (l) → ___ Al₂O₃ (s) + ___ CH₄ (g)