Ah, beta, first learn the formula: mass equals (current × time × atomic weight) divided by (96500 × valency). But in our small plating workshop, I always add ten percent extra for waste — theory never accounts for that spillage or uneven current, ha! Just yesterday, we calculated for copper plating, and the actual deposit was less; my old scale reminded me that real grams are always humbler than bookish grams.
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