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Calcium Carbonate Making Process Ppt

Calcium Carbonate Making Process Ppt

Calcium carbonate CaCO 3 only slightly harder than either silver or silver sulfide is considered to be a gentle abrasive but it is still hard enough to scratch the silver surface Wharton et al. 1990. Acrylic is about as hard as silver and silver tarnish making it a convenient material to use for testing a polish.

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