The Half Life Of Pa – 218 Is 3 Minutes. What Mass Of A 16 G Sample Of Pa – 218 Will Remain After 15 Minutes?

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Question

The half life of Pa – 218 is 3 minutes. What mass of a 16 g sample of Pa – 218 will remain after 15 minutes?

easy

Solution

Correct option is

0.5 g

Since 15 minutes , the number of nuclei left after 15 minutes of the original number.

Therefore, the mass of 16 g sample left after 15 minutes

.

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