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▼ Part C - The initial sample is 3.1 kg. What is the mass of the radioactive material that remains after 3.50 years? Keep 3 digits after the decimal point. mass remains = Keep 3 digits after the decimal point. mass decayed = Part Din Part C, What is the mass of the radioactive material that has decayed in 3.50 years? 17 ΑΣΦ Ro= Keep 2 digits after the decimal point. G| ΑΣΦ G| ΑΣΦ N= Part E - New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the initial activity in decays/s (Bq)? Use scientific notations, format 1.234*10". [5] ΑΣΦ C ? ? ? Bq Part F-New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the number of radioactive nuclei that remain after 3.50 years? kg ? kg

▼ Part C - The initial sample is 3.1 kg. What is the mass of the radioactive material that remains after 3.50 years? Keep 3 digits after the decimal point. mass remains = Keep 3 digits after the decimal point. mass decayed = Part Din Part C, What is the mass of the radioactive material that has decayed in 3.50 years? 17 ΑΣΦ Ro= Keep 2 digits after the decimal point. G| ΑΣΦ G| ΑΣΦ N= Part E - New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the initial activity in decays/s (Bq)? Use scientific notations, format 1.234*10". [5] ΑΣΦ C ? ? ? Bq Part F-New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the number of radioactive nuclei that remain after 3.50 years? kg ? kg

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Learning Goal: Radioactive decay - Half-life N 1,000,000 500,000 250,000 125,000 62,500 Number of nuclides, N x 10³ 1000 750 500 250 125 0 Time 0 the 2012 3h2 4112 5h2 612 7h2 8h2 9412 10₁2 31,250 15,625 he 2h 3h 4h 5h 6h 7he 8he 9h 10h Time in multiples of f 7,813 3,906 1,953 977 A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour = 60 min, 1 min = 60 s
Transcribed Image Text:Learning Goal: Radioactive decay - Half-life N 1,000,000 500,000 250,000 125,000 62,500 Number of nuclides, N x 10³ 1000 750 500 250 125 0 Time 0 the 2012 3h2 4112 5h2 612 7h2 8h2 9412 10₁2 31,250 15,625 he 2h 3h 4h 5h 6h 7he 8he 9h 10h Time in multiples of f 7,813 3,906 1,953 977 A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour = 60 min, 1 min = 60 s
▼ Part C- The initial sample is 3.1 kg. What is the mass of the radioactive material that remains after 3.50 years? Keep 3 digits after the decimal point. mass remains = Keep 3 digits after the decimal point. mass decayed = Part Din Part C, What is the mass of the radioactive material that has decayed in 3.50 years? 195| ΑΣΦ Ro= Keep 2 digits after the decimal point. Π| ΑΣΦ IVE ΑΣΦ N= Part E-New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the initial activity in decays/s (Bq)? Use scientific notations, format 1.234*10". ΓΙ ΑΣΦ ? ? ? Bq kg ? Part F - New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the number of radioactive nuclei that remain after 3.50 years? kg
Transcribed Image Text:▼ Part C- The initial sample is 3.1 kg. What is the mass of the radioactive material that remains after 3.50 years? Keep 3 digits after the decimal point. mass remains = Keep 3 digits after the decimal point. mass decayed = Part Din Part C, What is the mass of the radioactive material that has decayed in 3.50 years? 195| ΑΣΦ Ro= Keep 2 digits after the decimal point. Π| ΑΣΦ IVE ΑΣΦ N= Part E-New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the initial activity in decays/s (Bq)? Use scientific notations, format 1.234*10". ΓΙ ΑΣΦ ? ? ? Bq kg ? Part F - New case: The initial sample has No = 6.4x1010 radioactive nuclei. What is the number of radioactive nuclei that remain after 3.50 years? kg
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