Answer:
6.022×10²³ atoms of K
Explanation:
Given data:
Mass of KClO₃ = 122.5 g
Number of atoms of K = ?
Solution:
First of all we will calculate the number of moles of KClO₃ .
Number of moles = mass/molar mass
Number of moles = 122.5 g/ 122.5 g/mol
Number of moles = 1 mol
One mole of KClO₃ have 1 mole of K atoms.
Number of atoms of K:
1 mole = 6.022×10²³ atoms of K
Thus in 122.5 g of KClO₃ 6.022×10²³ atoms of K are present.
