<u>Answer:</u> The mass of chlorine atom required to combine is 35.5 grams.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
Given mass of sodium = 23 g
Molar mass of sodium = 23 g/mol
Putting values in equation 1, we get:
![\text{Moles of sodium}=\frac{23g}{23g/mol}=1mol](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20sodium%7D%3D%5Cfrac%7B23g%7D%7B23g%2Fmol%7D%3D1mol)
According to mole concept:
1 mole of an atom contains
number of particles
So, 1 mole of sodium will contain =
number of atoms
Number of atoms of chlorine = Number of atoms of sodium =
= 1 mole
Now, calculating the mass of chlorine required by using equation 1:
Moles of chlorine = 1 mole
Molar mass of chlorine = 35.5 g/mol
Putting values in equation 1, we get:
![1mol=\frac{\text{Mass of chlorine}}{35.5g/mol}\\\\\text{Mass of chlorine}=(1mol\times 35.5g/mol)=35.5g](https://tex.z-dn.net/?f=1mol%3D%5Cfrac%7B%5Ctext%7BMass%20of%20chlorine%7D%7D%7B35.5g%2Fmol%7D%5C%5C%5C%5C%5Ctext%7BMass%20of%20chlorine%7D%3D%281mol%5Ctimes%2035.5g%2Fmol%29%3D35.5g)
Hence, the mass of chlorine atom required to combine is 35.5 grams.