justmeyasiah justmeyasiah

11-05-2017
Mathematics

contestada

A spill of two gallons of methane occurs in the men's room. Methane has a half life of seven years. How much remains in 20 years

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austinjohnson66 austinjohnson66

11-05-2017

I think the answer is None because half life of seven years means it's full life is 14 years and after 20 years there would not be any left

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chasityalinewalker chasityalinewalker

12-05-2017

I think it may be a quarter of it left

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