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Strontium9O has a halflife of 28 days. A sample has a mass of 60 mg initially. Find a formula for the mass remaining after I

Strontium9O has a halflife of 28 days. A sample has a mass of 60 mg initially. Find a formula for the mass remaining after I days. 0 a) 60 X 10\"28 mg 0 b) 60 X 2\"28 mg 0 c) 60 x 10\"28 mg Q d) 60 X 24/60 mg O 9) 60 X 2_'/28 mg

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