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A 15 gram sample of a substances thats a by product of fireworks has a k value of 0.1405
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A 15 gram sample of a substances thats a by product of fireworks has a k value of 0.1405

User Rory McKinnel
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5 votes

Answer:5

Explanation:

User Max Mazur
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half life" is the amount of time it takes for a substance to lose 50% of it's mass so we use our formula y = a(e^kt) and plug in 7.5 for y, 15 for a, and 0.1405 for k
User Kristian Damian
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