atsk2477 atsk2477

30-04-2017
Mathematics

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a 22 gram sample of a substance thats used to preserve fruit and vegetables has a k value of 0.1011. find the half life rounded to the nearest tenth

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wolf1728 wolf1728

30-04-2017

k value = natural log (.5) / half-life
half-life = natural log (.5) / k value
half-life = -.693147 / 0.1011
half-life = 6.8560534125

I'd say the k value should be negative AND it should have units.

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