3. Chemical Reactions

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)

Determine the balanced chemical equation when ethanol, C₂H₆O is ignited in the presence of air.

For each molecule of C4H8 that reacts, how many molecules of carbon dioxide and water are produced?

H₃PO₄ + Mg(OH)₂ → Mg₃(PO₄)₂ + H₂O

For the following balanced equation, which has the highest coefficient? 4 H₂ + 2 C → 2 CH₄