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Mathematics 18 Online
OpenStudy (anonymous):

Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams. He measures a half-life of 232 seconds. The second scientist has a sample of the same substance with a mass of 80 grams. What is the half-life that she is most likely to measure? A. 58 seconds B. 232 seconds C. 464 seconds D. 928 seconds Will somebody PLEASE explain how to do this to wittle ol meeeeeeeeeee pwease!!!!!!!!!!!!! >.< Sorry it's not math..but pwease!!!! Lol I've posted it like 2 or 3 times with such confusing answers.:P

OpenStudy (anonymous):

232 seconds. the half life ALWAYS remains the same

OpenStudy (anonymous):

B. 232 seconds. The half-life is how long it takes for a particular isotope to lose half of its mass. Therefore it doesnt matter if the scientist has a sample that weighs 200 grams it will still take the same amount of time to decay to half.

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