41. | An investigator collects a sample of a radioactive isotope with an activity of 370,000...
A radioactive isotope has an activity of 9.98×104 Bq initially. After 3.00 hours the activity is 6.19×104 Bq. What is the half-life of the isotope? What is the activity after an additional 3.00 hours?
A radioactive isotope has an activity of 8.95×104 Bq initially. After 3.80 hours the activity is 5.64×104 Bq. What is the half-life of the isotope? What is the activity after an additional 3.80 hours?
A radioactive isotope has an activity of 8.01×104 Bq initially. After 3.85 hours the activity is 6.41×104 Bq. What is the half-life of the isotope? What is the activity after an additional 3.85 hours?
A radioactive isotope has an activity of 9.58×104 Bq initially. After 3.65 hours the activity is 5.94×104 Bq. What is the half-life of the isotope? What is the activity after an additional 3.65 hours?
Print S h are an activity or a radioactive... • Timer Notes Evaluate Feedback A radioactive isotope has an activity of 8.86x109 Bq initially. After 3.65 hours the activity is 5.94x10° BQ. What is the half-life of the isotope? Submit Answer Tries 0/20 What is the activity after an additional 3.65 hours? Summer Tries 0/20 Post Discussion Send Feedback
A radioactive isotope has an activity of 8.95×104 Bq initially. After 3.80 hours the activity is 5.55×104 Bq. What is the half-life of the isotope?
A radioactive isotope has an activity of 8.95×104 Bq initially. After 3.80 hours the activity is 5.55×104 Bq. What is the half-life of the isotope? 5.51 h You are correct. Previous Tries What is the activity after an additional 3.80 hours?
A radioactive isotope has an activity of 8.02x104 Bq initially. After 3.40 hours the activity is 6.42x104 Bq. What is the half-life of the isotope? 1.06x101 h You are correct. Previous Tries What is the activity after an additional 3.40 hours? Submit Answer Tries 0/99
Course Contents HOMEWORKS 10 (due... Half life and activity of a radioactive ... - Timer Notes Evaluate Feedback A radioactive isotope has an activity of 8.86x109 Bq initially. After 3.65 hours the activity is 5.94x109 Bq. What is the half-life of the Isotope? Suomt Answer Tries 0/20
A freshly prepared sample of a radioactive isotope has an activity of 27.5 mCi. After 2.60 hours, the activity is 21.0 mCi. (a) Determine the half-life of the isotope. (h) (b) How many nuclei of the isotope were contained in the freshly prepared sample? (nuclei) (c) After how much time will the activity be 1.40 mCi? (h)