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Answer:
Silicon, Si forms covalent-network solids.
Explanation:
Silicon, Boron and Carbon are the elements that form covalent networks solids: solid materials whose units consists of chains or networks of atoms or molecules covalently bonded together. Silicon, Si has a similar structure to carbon, but not the exact hardness because Si-Si bonds are not as strong as carbon-carbon bonds.
An example of Si covalent compound is silicon dioxide.
Answer:
16.0 mol H.
Explanation:
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In this case, since the Avogadro's number help us to compute the moles of methanol in the given molecules:
Thus, since 1 mole of methanol contains 4 moles of hydrogen atoms, we obtain:
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