How many moles of KCl will be formed from 2.73 grams of KClO3

0.022 mole

Explanation:

To obtain the desired result, first, we need to write a balanced equation that will produced KCl from KClO3. This is illustrated below:

2KClO3 —> 2KCl + 3O2

Next, let us calculate the number of mole of KClO3 present in 2.73g of KClO3. This is illustrated below:

Molar Mass of KClO3 = 39 + 35.5 + (16x3) = 39 + 35.5 + 48 = 122.5g/mol

Mass of KClO3 from the question = 2.73g

Number of mole of KClO3 =?

Number of mole = Mass/Molar Mass

Number of mole of KClO3 = 2.73/122.5 = 0.022 mole

Now, we can obtain the number of mole of KCl produced from 2.73g of KClO3 as follow:

2KClO3 —> 2KCl + 3O2

From the equation above,

2 moles of KClO3 produced 2 moles KCl.

Therefore, 0.022 mole of KClO3 will also produce 0.022 mole of KCl.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.