Answer:
B.
Explanation:
One mole is the amount of substance that contain the Avogadro number which is equal to 6.022×10^23 atom, molecules or ions.
Nitrogen is a diatomic molecule in the VA family on the periodic table. Nitrogen has five valence electrons, so it needs three more valence electrons to complete its octet. A nitrogen atom can fill its octet by sharing three electrons with another nitrogen atom, forming three covalent bonds, a so-called triple bond.
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The original results have not been replicated consistently and reliably.
Answer:
Both involve drilling into the earth and can cause environmental degradation.
Explanation:
C, because a homogeneous mixture is evenly mixed.
All those others would be heterogeneous (not evenly mixed).
