Please use the half life calculator to complete the followingtable:
Isotope Half-Life (days) Starting Amount in µC µCafter16 daysµCafter 50 days
Iodine 125 15000
Iodine 131 8 15000
Iodine 131 8 250
Hydrogen 3 15000
Carbon 14 50000
Phosphorous 32 15000
Phosphorous 33 15000
Sulfur 35 15000
Chromium 51 15000
You should observe the decay rates when the T1/2 is set at 10, 20,50, and 100.
1. Which of these settings should produce the most accuratecounting results? (Try counting how quickly the dotsdisappear.)
2. Which of the isotopes in the table above would produce the bestresults when trying to determine the age of something thousands ofyears old? Why?
3. Why does an ancient cotton garment contain less Carbon 14 than apiece of cotton made last year?
4. Why is C-14 dating NOT useful in determining whether a piece ofcotton fabric was made last week or 2 months ago?
5. Why is C-14 dating NOT useful in determining the age of an metalartifact?
6. How are Phosphorous 32 and Phosphorous 33 different other thanhalf-life?
Please use the half life calculator to complete the followingtable:
Isotope Half-Life (days) Starting Amount in µC µCafter16 daysµCafter 50 days
Iodine 125 15000
Iodine 131 8 15000
Iodine 131 8 250
Hydrogen 3 15000
Carbon 14 50000
Phosphorous 32 15000
Phosphorous 33 15000
Sulfur 35 15000
Chromium 51 15000
You should observe the decay rates when the T1/2 is set at 10, 20,50, and 100.
1. Which of these settings should produce the most accuratecounting results? (Try counting how quickly the dotsdisappear.)
2. Which of the isotopes in the table above would produce the bestresults when trying to determine the age of something thousands ofyears old? Why?
3. Why does an ancient cotton garment contain less Carbon 14 than apiece of cotton made last year?
4. Why is C-14 dating NOT useful in determining whether a piece ofcotton fabric was made last week or 2 months ago?
5. Why is C-14 dating NOT useful in determining the age of an metalartifact?
6. How are Phosphorous 32 and Phosphorous 33 different other thanhalf-life?
