They are identical to the nucleus of the helium-4 atom. So the answer is helium atoms.
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Answer:
Explanation:
2 NH4I + Pb(NO3)2 = PbI2 + 2 NH4NO3
2 mol 1 mol
x ml 751 ml
0.550 M 0.380 M
0.380 mol/1000 ml x 751 ml = 0.285 mol Pb(NO3)2
0.285 mol Pb(NO3)2 x 2 mol NH4I/1 mol Pb(NO3)2=0.571 mol NH4I needed
0.571 mol NH4I/0.550 mol/1000 ml=1038 ml
Answer:
Both substances undergo substitution reactions.
Explanation:
Let us go back to the idea of aromaticity. Aromatic substances are said to possess (4n + 2) π electrons according to Huckel rule.
Aromatic substances are unusually stable and the aromatic ring can not be destroyed by addition reactions.
Since both benzene and cyclooctatetraene are both aromatic, they do not undergo addition reactions whereby the aromatic ring is destroyed. They both undergo substitution reaction in which the aromatic ring is maintained.
