Question: can someone help me and please show work Half Life Practice Directions: Use table N & T and show all work... 1. A sample of

can someone help me and please show work

Half Life Practice Directions: Use table N & T and show all work... 1. A sample of 1-131 decays to 1.0 grams in 40 days. What was the mass of the original sample? 2. What is the total number of hours required for Potassium-42 to undergo three half-life periods? 3. In 6.20 hours, a 100 gram sample of Ag-112 decays to 25.0 grams. What is the half-life of Ag-112? 4. After 60 days, 10.0 grams of radioactive isotope remains from an original 80.0 g sample. What is the half-life of this element

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