For which of the following chemical equations are the stoichiometric coefficients of at least two substances the same when the equation is balanced?
H3PO4(aq) + Mg(OH)2(s) H2O(l) + Mg3(PO4)2(s)
C3H4(g) + O2(g) H2O(g) + CO2(g)
Na3PO4(aq) + AgNO3(aq) Ag3PO4(s)+ NaNO3(aq)
C5H6(g) + O2(g) H2O(g) + CO2(g)
H3PO4(aq) + Mg(OH)2(s) H2O(l) + Mg3(PO4)2(s)
C3H4(g) + O2(g) H2O(g) + CO2(g)
Na3PO4(aq) + AgNO3(aq) Ag3PO4(s)+ NaNO3(aq)
C5H6(g) + O2(g) H2O(g) + CO2(g)