Answer:
circulatory system
Explanation:
it is what makes oxygen circulate
Answer:
it cannot be separated by physical methods
Explanation:
Answer:

Explanation:
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In this case, according to the given information it turns out possible for us to realize that one mole of the given compound, Mg(ClO₄)₂, has one mole of Mg, two moles of Cl and eight moles of O; thus, we proceed as follows:

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14. C
15. B
16. D
17. D
18. I am not sure sorry.<span />