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--- chem_lab:procedures:acid_boiling [2021/03/15 12:59] – mferner
+++ chem_lab:procedures:acid_boiling [2023/04/20 09:23] (current) – mferner
@@ Line 1: / Line 1: @@
 ====== Acid boiling ======
-Diamond is incredibly chemically stable and inert, which allows us to clean dirt off the surface using dangerously strong chemicals.  A three-acid mix is effective at cleaning ??? off the surface.
+Diamond is incredibly chemically stable and inert, which allows us to clean dirt off the surface using dangerously strong chemicals.  A three-acid mix is effective at cleaning off the surface.
 ===== Chemicals =====

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