2. Challenge For each of the following, balance the chemical equation; interpret the
equation in terms of particles, moles, and mass; and show that the law of conservation
of mass is observed.
a.
Na(s) +
H₂O(1)
b.
Zn(s) +
-
NaOH(aq) + H2(g)
Zn(NO3)2(aq) + _N₂O(g) + H₂O(1)
HNO3(aq) → Zn(NO3)2(aq) +
