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Answer:
When aqueous solutions of silver(I) acetate and manganese(II) iodide are combined, an insoluble precipitate of silver(I) iodide is formed
Explanation:
- It is an example of precipitation reaction.
- When aqueous solutions of silver(I) acetate and manganese(II) iodide are combined, an insoluble precipitate of silver(I) iodide is formed.
- Precipitation of silver(I) iodide is confirmed by it's yellow color.
- Hence a reaction is observed.
- Molecular reaction:
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Answer:
The charges did not transfer from the cation to the anion to yield the correct subscripts
Explanation:
First of all, we see that we have and in this ionic compound. Since this is a substance, it has a net charge of 0. This means the charge of a cation should be balanced by the charge of the anion.
The lowest common multiple of 3 and 2 is 6, meaning we need:
- \frac{6}{3}=2 cations;
- \frac{6}{2}=3 anions;
Oxygen needs a total of 8 valence electrons, as it's the anion and it gains electrons to obtain an octet. We have 3 oxygen anions in total. Normally, oxygen has 6 electrons, so it needs to gain 2 electrons for each of the 3 oxygen atoms, that is, gain a total of 6 electrons. Those 6 electrons are donated by two aluminum atoms (each having 3 valence electrons), so two aluminum cations are balanced by three oxygen anions.
The Lewis diagram is correct, as it shows an octet on oxygen. We also have the correct charges. The subscripts, though, have to be 2 and 3 for Al and O respectively.
Number of particles in one mole of a pure substance
Explanation:
The avogadro's constant is the number of particles in one mole of a pure substance.
- A mole is a unit of quantity of particles.
- It can be likened to a quantity of things in everyday life like a dozen, a gross etc.
- A dozen is 12 units of substance.
- A mole contains 6.02 x 10²³particles.
- 6.02 x 10²³ is called the Avogadro's number or constant.
- This was proposed by Amedo Avogadro.
- A mole is the amount of a substance that contains the Avogadro's number of particles.
- The particles are atoms, molecules, formula units, ions, electrons, protons, neutrons e.t.c
learn more:
Avogadro's constant brainly.com/question/2746374
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