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brianna0905
 one year ago
A certain radioactive element has a halflife of one hour. If you start with 1.0 gram of the element at noon, how much of the radioactive element will be left at 2 p.m.?
0.50 grams
0.25 grams
0.125 grams
0.0 grams
brianna0905
 one year ago
A certain radioactive element has a halflife of one hour. If you start with 1.0 gram of the element at noon, how much of the radioactive element will be left at 2 p.m.? 0.50 grams 0.25 grams 0.125 grams 0.0 grams

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brianna0905
 one year ago
Best ResponseYou've already chosen the best response.0i think its 0.25g im not to sure

chmvijay
 one year ago
Best ResponseYou've already chosen the best response.2yaaa ur right see at 12 Pm or noon 1 gram is there since 1 hr is half time where it get converted to half of initial value at 1pm = 1/2 =0.5 gram then at 2 pm 0.5/2 =0.25 gram ur right :)

brianna0905
 one year ago
Best ResponseYou've already chosen the best response.0ohh hmm thought so, thank you!!(:

asmagul
 one year ago
Best ResponseYou've already chosen the best response.0it is 0.25 as time is 2 hours then there are two half lives.1?2=0.5......0.5/2=0.25
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