☆Only need information for problem 3 but you need to know the information from problem 2 to get answer 3☆ ​

2. The balanced equation is given below

2KClO₃ —> 2KCl + 3O₂

18 moles of oxygen, O₂ were obtained.

3. 21 moles of oxygen, O₂.

Explanation:

2. Determination of the number of mole of oxygen produced.

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2KClO₃ —> 2KCl + 3O₂

From the balanced equation above,

2 moles of KClO₃ decomposed to produce 3 moles of O₂.

Finally, we shall determine the number of mole oxygen, O₂ produced by the reaction of 12 moles of potassium chlorate, KClO₃. This can be obtained as follow:

From the balanced equation above,

2 moles of KClO₃ decomposed to produce 3 moles of O₂.

Therefore, 12 moles of KClO₃ will decompose to produce = (12 × 3)/2 = 18 moles of O₂.

Thus, 18 moles of oxygen, O₂ were obtained from the reaction

3. Determination of the number of mole of oxygen, O₂ produced by the reaction of 14 moles of KClO₃.

From the balanced equation above,

2 moles of KClO₃ decomposed to produce 3 moles of O₂.

Therefore, 14 moles of KClO₃ will decompose to produce = (14 × 3)/2 = 21 moles of O₂.

Thus, 21 moles of oxygen, O₂ were obtained from the reaction

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.