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08-01-2024
Chemistry

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Potassium-42 has a half-life of approximately 12 hours. If a sample of ⁴²K₁₉ has an initial mass of 50. g, what mass of ⁴²K₁₉ remains after 48 hours?

a) 6.25 g
b) 12.5 g
c) 25.0 g
d) 50.0 g

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