What Mass of ¹⁴C, with a Half-Life of 5730 Y $280.0 \mathrm {~Bq} ?$

question 7

Multiple Choice

What mass of ¹⁴C, with a half-life of 5730 y, do you need to provide a decay rate of $280.0 \mathrm {~Bq} ?$ The mass of ¹⁴C is 14.00 u, and 1 u = 1.6605 × 10^-27 kg.

• A)1.70 × 10^-12 kg
• B)5.38 × 10^-19 kg
• C)3.84 × 10^-20 kg
• D)8.68 × 10^-13 kg

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