contestada

How many grams of a 1000-gram radioactive sample are left after 3 half-lives? *
1 point
1000 grams
500 grams
250 grams
125 grams
2000 grams

Respuesta :

pbsindhuja

The answer is 125 gms.

 

   


   


   


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Answer:

first half of 1000gram=1000/2=500g

second half of 1000gram=500/2=250g

third half of 1000gram=250/2=125 g

Explanation:

in simple

third half of 1000 g=1000/(2³)=125gram

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