1. What is the phase (state) symbol for a chemical that is a gas? *

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)

b. is the answer hoped i        

what is the question here. i think you messed up.