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there are 500g of cobalt

there are 500g of cobalt to 60 that has a half life of 5years ,how many grams of cobalt are remained after 15years
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2. asked by Anonymous
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Which characteristic of the element Cobalt (Co) is most closely related to its chemical reactivity?A. Cobalt's two valence
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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
3. 84 views
Which of the following are negative consequences of cobalt mining in the Democratic Republic of CongoSelect 2 answers Thousands
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2. 27 views
What is the correct name for the ionic compound, CoBr2?? cobalt(III) bromide ? cobalt(II) dibromide ? cobalt bromide ?
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2. asked by emma
3. 50 views
Which of the following are negative consequences of cobalt mining in the Democratic Republic of Congo? Select the two correct
1. 1 answer
2. 76 views
Which of the following are negative consequences of cobalt mining in the Democratic Republic of Congo? Select the two correct
1. 1 answer
2. 81 views
A thermal neutron beam of intensity 1 to the power 11, neutrons/sec is directed for 2 days into a cavity in a block of cobalt
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2. asked by Ryan
3. 473 views
What is the correct name for the ionic compound, CoF3?? cobalt fluoride ? cobalt(II) fluoride ? cobalt(III) trifluoride ?
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2. asked by emma
3. 56 views
A student determines the cobalt(II) content of a solution by first precipitating it as cobalt(II) hydroxide, and then
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2. asked by jen
3. 2,199 views