I don’t understand this, can you help me?

Chemistry

1 answer:

vlada-n [284]4 years ago

3 0

An atom becomes stable if it has a full and complete ring. 2 of the choices are wrong off the start because you can't gain electrons and have a net positive charge, nor can you lose electrons and have a net negative charge. That leaves us with Option A or D. As I said earlier, an atom becomes stable if it has a full and complete ring. Obviously, if you lose 3 electrons from the last ring, the atom would be stable (because the 2nd ring is now full), and it also would have a net positive charge because it lost electrons.

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Read 2 more answers

For the reaction: 3 KClO3 to 3 KCL + 4O2, How many miles of potassium chloride are produced from 9.3 grams of potassium chloride

Valentin [98]

5.7 g of KCl is produced.

<u>Explanation:</u>

First we have to write the balanced equation as,

$2 K C l O_{3} \rightarrow 2 K C l+3 O_{2} \uparrow$

Then we have to find the moles of potassium chlorate as,

$Moles of $K C l O_{3}=9.3 g$ of $K C l O_{3} \times \frac{1 \text { mol of } K C l O_{3}}{122.55 g K C l O_{3}}=0.076$ moles$

Then we have to find the moles of KCl as,

$Moles of $\mathrm{KCl}=0.076$ moles of $\mathrm{KClO}_{3} \times \frac{2 \text { mol of } \mathrm{KCl}}{2 \text { mol } \mathrm{KClo}_{3}}=0.076$ moles$