Chemistry
posted by S .
Static charge can interfere with the production of plastic products by attracting dust and dirt. to reduce it, manufacturers expose the area to polonium210, which has a halflife of 138 days. How much of a 25.0g sample will remain after one year (365 days)?
N = N0(1/2)t/T = (25)(1/2)365/138 ≈ 4.0 g
Would 4.0 g be correct?

yes. Good work.
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