1.

      The chemical formula of Borax is

A. \[N{{a}_{2}}{{B}_{4}}{{O}_{7}}\]  
B.        \[CaCOC{{I}_{2}}\]
C. \[BaS{{O}_{4}}\] 
D.        \[Ca{{(S{{O}_{4}})}_{2}}\]
Answer» B.        \[CaCOC{{I}_{2}}\]


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