Fluorine-18 undergoes positron emission with a half-life of 1.10 x 10- take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.) minutes. If a patient is given a 248 mg dose for a PET scan, how long will it 99 minutes 1.3 x 102 minutes O 2.1 x 102 minutes O 1.7 x 102 minutes O 3.00 x 102 minutes

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Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.