Which of the following is the general equation for a decomposition reaction?
1. AB
--> A + B (compound --> elements)
2. C + D
--> CD (elements - --> compound)
3. A + CD --> AD + CD (element +
compound ---> element + compound)

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)

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

bcde is the incorrect answer it is a