Answer:
Phase changes that require a loss in energy are condensation and freezing.
Explanation:
Answer:
★ Molecular geometry is described by VSEPR theory, which basically states that electron pairs around a central atom will repel each other, and get as far apart as possible, in three dimensions.
Explanation:
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The formula C2H4 can be classified as both a molecular formula
and an empirical formula. The answer is number 4.
I not sure but I think it is neither
