1.

The radioisotope, tritium (""_(1)^(3)H) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg. how many milligrams of it would remain after 49.2 years?

Answer»

1 mg
2 mg
4 mg
8 mg

SOLUTION :NUMBER of half - lives in 49.2 years = 4
`32 mg to 16 mg to 8 mg to 4 mg to 2 mg`.


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