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navik [9.2K]
2 years ago
11

The half-life of barium-131 is 12.0 days. How many grams of

Chemistry
1 answer:
dimulka [17.4K]2 years ago
3 0

Let's see

\\ \rm\Rrightarrow A=A_o(0.5)^{\frac{t}{H}}

  • H is half-life

\\ \rm\Rrightarrow A=10(0.5)^{\frac{60}{12}}

\\ \rm\Rrightarrow A=10(0.5)^5

\\ \rm\Rrightarrow A=10(0.03125)

\\ \rm\Rrightarrow A=0.3125g

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