C3h8 + 5o2 3co2 + 4h2o is an example of a chemical reaction.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

answer; i believe the correct answer is (solid gold);