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1) Cobalt has a mass

Which characteristic of the element Cobalt (Co) is most closely related to its chemical reactivity?A. Cobalt's two valence
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Naturally occurring cobalt consists of only one isotope Co59 whose relative atomic mass is 58.9332. A synthetic radioactive
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2. asked by Candace
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Naturally occurring cobalt consists of only one isotope, 59Co, whose relative atomic mass is 58.9332. A synthetic radioactive
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2. asked by Vanessa
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A sample of pure cobalt-60 has an activity of 8 µCi.(t1/2 cobalt-60 = 5.26 a) (a) How many atoms of cobalt-60 are present in
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2. asked by Trixie
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I got 11e-29 for the first answer which I believe is correct. I just don't understand how to do part b.PROBLEM: Cobalt has a
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2. asked by Sky
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the mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a period of 10.5 years. from this info
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2. asked by shaleena
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the mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a period of 10.5 years. from this info
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2. asked by shaleena
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Which of the following are negative consequences of cobalt mining in the Democratic Republic of Congo? Select the two correct
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2. asked by L
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Which of the following are negative consequences of cobalt mining in the Democratic Republic of CongoSelect 2 answers Thousands
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Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic
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2. asked by Aidan
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