D. metamorphic rock melts and crystallizes to become igneous rock <span />
Answer:

Explanation:
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In this case, according to the given chemical reaction:
2 Al + 3 Cl2 --> 2 AlCl3
Whereas there is a 2:3 mole ratio of aluminum to chlorine; it will be possible for us to calculate the required grams of aluminum by using the equality 22.4 L = 1 mol, the aforementioned mole ratio and the atomic mass of aluminum (27.0 g/mol) to obtain:

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The answer is D, medical diagnosis
Answer:
0.0250 g
Explanation:
176.12 g/mol* 0.000142 mol =0.0250 g