Can somebody please help me understand how to do this

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)

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.