21. Apply Concepts Classify each reaction and balance the
equations.
a. C3H6(g) + O₂(g) - CO₂(g) + H₂O(g)
Al₂O3(s) + H₂O(l)
Li₂O(s)
Al(OH)3(s)
C. Li(s) + O₂(g)
d. Zn(s) + AgNO3(aq) -
Ag(s) + Zn(NO3)₂(aq)