If the half-life of iodine-131 is 8.10 days, how long will it take a 50.00g sample to decay to 6.25g?
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Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

What metric units would you use to measure the thickness of a key

What is the chemical formula for the compound formed between sodium and flour one