What is the difference between copper sulfate, and copper sulfate pentahydrate?
If the crystals are blue, then you have the pentahydrate; in fact, I believe it will be difficult for you to dry it out.
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The chemical compound CuSO4 is copper sulfate, and copper sulfate pentahydrate is copper sulfate hydrated, meaning that each copper sulfate molecule has five water molecules bound to it.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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