There are 5.43 x 10²³ present in 187 grams of XeF₄
Further explanation
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
[tex]\tt n(mol)=\dfrac{mass(m)}{MW}[/tex]
mass of XeF₄ = 187 g
mol XeF₄ (MW=207,2836 g/mol) :
[tex]\tt mol=\dfrac{187}{207,2836 g/mol}=0.902[/tex]
Number of molecules :
[tex]\tt N=0.902\times 6.02\times 10^{23}\\\\N=5.43\times 10^{23}[/tex]
