Chemistry, 03.02.2020 03:46, judyandaub1

Acertain radioactive element has a half-life of one hour. if you start with 40.0 grams of the element at noon, how much of the radioactive element will be left at 2 p. m.?

a.) 20.0 grams
b.) 10.0 grams
c.) 5.0 grams
d.) 0.0 grams

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Acertain radioactive element has a half-life of one hour. if you start with 40.0 grams of the elemen...