Cal J.
asked • 04/01/21Let Q (in grams) represent the mass of a quantity of carbon-14, which has a half-life of 5730 years. The quantity present after t years is. Determine the quantity present after 2000 years. .
| a | 7.851 grams |
| b | 1.745 grams |
| c | 0.785 grams |
| d | 1.117 grams |
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1 Expert Answer
The half-life formula is:
Q(t) = Q0·(1/2)t/H
- Q(t) = the amount of carbon-14 remaining after t years
- Q0 = the initial amount of carbon-14 = (you left this out. It should be in your original problem statement)
- t = years = 2000
- H = the half-life = 5730
Plug in the numbers and use your calculator to get the answer.
Mark M.
Yet that shall not provide an answer with a unit - grams - as required in the choices.
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04/01/21
Philip P.
tutor
Granted, Mark, the student omitted the initial amount, but I'm confident that it's in the original problem statement. So I figure he can read that amount from the problem and plug it in. I wouldn't have solved it completely anyway even it the student had included the initial amount. The student can do that much on his own.
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04/01/21
Cal J.
*she.
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04/02/21
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Mark M.
What is the initial amount?04/01/21