Calcium carbonate (Na2CO3), aka "washing soda"....

Interesting. CALCIUM carbonate with NO calcium in it!-)
Just sodium, carbon, and oxygen!
(table salt = NaCl = sodium chloride)
Is that where the "soda" part of the "washing soda" name comes from?

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--Myron A. Calhoun; W0PBV; 2001 Dunbar Road; Manhattan, KS 66502-3907
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