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xenn [34]
3 years ago
9

12. Which element is a metalloid? 1) AI 2) Ar 3) As 4) Au

Chemistry
1 answer:
Nina [5.8K]3 years ago
4 0
I believe it is element As, for arsenic.
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Which of the following are likely to form a covalent bond?
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hydrogen and oxygen atoms

Explanation:

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Blast furnaces extract pure iron from the iron(III) oxide in iron ore in a two step sequence. In the first step, carbon and oxyg
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6 C(s) +  3 O₂(g) + 2 Fe₂O₃(s) →  4 Fe(s) + 6 CO₂(g)

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+

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--------------------------------------------------------------------------------------------------

6 C(s) +  3 O₂(g) + 2 Fe₂O₃(s) + 6 CO(g) → 6 CO(g) + 4 Fe(s) + 6 CO₂(g)

6 C(s) +  3 O₂(g) + 2 Fe₂O₃(s) →  4 Fe(s) + 6 CO₂(g)

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14-6=8
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