Half life of Erbium-165 is 10 hours. How much Erbium (in gm) will be l – McqOptions

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1.	Half life of Erbium-165 is 10 hours. How much Erbium (in gm) will be left out of 0.5gm after 20 hours?
A.	0.25
B.	0.0625
C.	0.125
D.	0.3125
Answer» D. 0.3125

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