True is the correct because helio means sun in greek and the sun is in the center of our universe
Answer:10^27 atoms in an apple
Explanation:
Answer:
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Explanation:
i would help answer but your post has no diagrams or at least there not showing up
NH4+ and NH3 are an acid-conjugate base pair, since NH4+ is an acid, while NH3 is its conjugate base (since it is without the H+).
H2O and H3O+ can also be considered an acid-conjugate base pair, since H3O+ is an acid, while H2O would be its conjugate base. (But if only 1 answer is to be selected, it should be the NH4+ and NH3)
NH4+ and H3O+ are both acids, and both H2O and NH3 can be considered bases.