Which subatomic particle has the least mass?
-electron
-proton
-neutron
-the atom

electron

Explanation:

I hope it will help u dear

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.

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tony (lordcaos066)