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Grade: 11

                        

In 500 gm of 223 Fr, how much Fr will remain after 63 minutes?

2 years ago

Answers : (1)

Vikas TU
12278 Points
							
We know the half life of Fr is 22 min so we can givee the answer approximately as the quanity after three half lives so the 500/8=62.5g. We have taken three half lives as the given time is 63min close to 66min.
one year ago
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