How much mercury is in a button battery?
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All of the different button-cell batteries can contain up to 0.005 grams (5 milligrams) of mercury in a single unit. Stacked button-cell batteries (i.e., units that contain multiple button-cells stacked on top of one another) may contain a larger amount of mercury.
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Answer:
All of the different button-cell batteries can contain up to 0.005 grams (5 milligrams) of mercury in a single unit. Stacked button-cell batteries (i.e., units that contain multiple button-cells stacked on top of one another) may contain a larger amount of mercury.
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