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Find the mass of 60 Co in this sample?

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Find the mass of 60 Co in this sample?

Postby kywrkh » Tue Jun 26, 2012 4:47 am

I saw someone else ask something similar to this question, but didn't show work.
Last problem on my hw and have no idea how to get started with it.

Naturally occurring cobalt consists of only one isotope, 59 Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, 60Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.7567 g sample of cobalt has an apparent "atomic mass" of 58.9901.

Find the mass of 60 Co in this sample.

Express your answer with appropriate units.
m = _______
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Find the mass of 60 Co in this sample?

Postby giovany » Tue Jun 26, 2012 4:48 am

x: Mass percentage of 59Co.
y: Mass percentage of 60Co.

58.9332 * x + 59.9338 * y = 58.9901

Then you need to know another equation to solve it.
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Joined: Thu Mar 31, 2011 4:45 pm

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