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An isotope of cesium (cesium-137) has a half-life of 30 years. if 1.0 mg of cesium-137 disintegrates over a period of 90 years, how many mg of cesium-137 would remain?

Sagot :

0.125 mg of cesium-137 would remain.

What is cesium-137?

For calibrating radiation-detection tools like Geiger-Mueller counters, modest amounts of cs-137 are utilized. Cs-137 is employed in higher concentrations in medical radiation therapy equipment for the treatment of cancer, in industrial gauges that monitor liquid flow through pipelines, and in other industrial equipment to gauge the thickness of materials including paper, photographic film, and metal sheets.

In nuclear reactors and during the testing of nuclear weapons, one of the consequences of nuclear fission is cs-137. Due to nuclear reactor mishaps, such as the 1986 Chernobyl power plant accident, which spread Cs-137 to numerous European nations, and nuclear weapons testing that took place in the 1950s and 1960s, small amounts of Cs-137 can be discovered in the environment.

Learn more about cs-137

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