Problem: The half-life for the radioactive decay of C-14 is 5730 years. How long will it take for 30% of the C-14 atoms in a sample of C-14 to decay? Express your answer using two significant figures. If a sample of C-14 initially contains 1.2 mmol of C-14, how many millimoles will be left after 2260 year Express your answer in millimoles using two significant figures.

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The half-life for the radioactive decay of C-14 is 5730 years. 

How long will it take for 30% of the C-14 atoms in a sample of C-14 to decay? Express your answer using two significant figures. 

If a sample of C-14 initially contains 1.2 mmol of C-14, how many millimoles will be left after 2260 year Express your answer in millimoles using two significant figures.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the First Order Half Life concept. You can view video lessons to learn First Order Half Life. Or if you need more First Order Half Life practice, you can also practice First Order Half Life practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Mullins' class at FSCJ.