Which equation represents a neutralization reaction? a. 4fe(s) + 3o2(g) → 2fe2o3(s) b. 2h2(g) + o2(g) → 2h2o() c. hno3(aq) + koh(aq) → kno3(aq) + h2o() d. agno3(aq) + kcl(aq) → kno3(aq) + agcl(s)

The equation represents a neutralization reaction is HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(). The answer is letter C. A. 4Fe(s) + 3O2(g) → 2Fe2O3(s), 2H2(g) + O2(g) → 2H2O() and AgNO3(aq) + KCl(aq) → KNO3(aq) + AgCl(s) are not neutralization reaction.

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water