WebASK AN EXPERT. Science Chemistry old-198 is a β emitter used to treat leukemia. It has a half-life of 2.7 days. The dosage is 1.0 mCi/kg body weight. How many half lives must pass for a 70 mCi dose to decay to 2.2 mCi? How long (days) would it take for a 70 mCi dose to decay to an activity of 2.2 mCi? old-198 is a β emitter used to treat ... WebThe gold-198 isotope has a half-life of 2.7 days. If you start with 10 mg at the beginning of the week, how much remains at the end of the week, seven days later? What is the half-life of a radioisotope if 25.0 grams of an original 200-gram sample of the isotope remains unchanged after 11.46 days?
11.2: Half-Life - Chemistry LibreTexts
WebFind many great new & used options and get the best deals for Johnny Was $198 NWT ONYX SISTINE Half Zip Pullover Top LARGE L at the best online prices at eBay! Free shipping for many products! WebJan 10, 2024 · The half-life of gold-198 is 2.77 days. What is half-life of gold-198? Gold-198 decays with a half-life of 2.7 days to stable mercury-198 by emission of ß particles of … free microword soft
Number 198: mathematical and symbolic properties Crazy Numbers
WebAnswer (1 of 2): 100 is 16time bigger than 6.25 (1/16) Those 16 can be resolved to 2⁴ So if you halve the 100 4 times you get 4 halfing steps untill you are at 1/16 If 4 steps that are equally long need 10.8 says how long is one step? 2d14h (that ain't the correct number as pointed out jn a c... WebTh half-life of 198 Au is 2.7 days. (a) Find the activity of a sample containing 1.00 μ g of 198 Au. (b) What will be the activity after 7 days ? Take the atomic weight of 198 Au to be 198 g mo l − 1 WebLevel 198 is the 199th level of the Backrooms. This page contains too much code, and the background may change, so the mobile device may can not display the page in proper way. Use computer if possible. Level 198 was discovered in 1972, while a wanderer who was preparing to enter the Level 224 entered the Level 303, and then swallowed by … free middle ages tests