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weqwewe [10]
2 years ago
7

How many formula units are there in 20.6 moles of Al(NO3)3?

Chemistry
1 answer:
Mnenie [13.5K]2 years ago
7 0

Answer:

0.004 6949 18602 2713 mole

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Fe(CN)₂,  FeCO₃,  Pb(CN)₄,  Pb(CO₃)₂

Explanation:

Cations (positively charged ions) can only form ionic bonds with anions (negatively charged ions). However, you can't just simply put one cation and one anion together to form a compound. Each compound needs to been neutral, or have an overall charge of 0. When cations and anions do not have charges that perfectly cancel, you need to modify the amount of each ion in the compound.

1.) Fe(CN)₂
-----> Fe²⁺ and CN⁻

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2.) FeCO₃

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3.)  Pb(CN)₄

-----> Pb⁴⁺ and CN⁻

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4.) Pb(CO₃)₂

-----> Pb⁴⁺ and CO₃²⁻

-----> +4 +(-2) + (-2) = 0

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