a mineral sample is analyzed for its cobalt and calcium content. a sample is dissolved, and then the cobalt and calcium are precipitated as co(oh)2(s) and ca(oh)2(s) . at what ph can co(oh)2(s) be separated from ca(oh)2(s) at 25 °c? assume that an effective separation requires a maximum concentration of the less soluble hydroxide of 1×10−6 m .
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Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.
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a mineral sample is analyzed for its cobalt and calcium content. a sample is dissolved, and then the...
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