Question #57163

1 Answer
Hasna K. · Stefan V.
Dec 8, 2017

4.5 xx 10^244.5×1024 "ions"ions

Explanation:

Based on the chemical formula, you know that each formula unit of "Cu"("NO"_3)2Cu(NO3)2 will dissociate into 3 ions when dissolved in water (one "Cu"^(2+)Cu2+ ion and two "NO"_3^(-)NO−3 ions). The polyatomic ion does not dissociate.

So if we multiply 2.5 xx 32.5×3 we get 7.57.5 moles of ions. Then, multiply by Avogadro’s constant, 6.02 x 10^236.02x1023, and we get the final result 4.5 xx 10^244.5×1024 ions.

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