Radioactive Carbon ${ } ^ { 14 } \mathrm { C }$

question 149

Multiple Choice

Radioactive carbon, ${ } ^ { 14 } \mathrm { C }$ , has a has a half-life of 5730 years. After 1000 years, 3.7 grams remain. What was the initial quantity of ${ } ^ { 14 } \mathrm { C }$ ? Round your answer to two decimal places.

• A)4.18 grams
• B)3.90 grams
• C)4.35 grams
• D)6.98 grams
• E)3.94 grams

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