a. 1.505 x 10²⁴
b. 4.37 x 10²⁴
c. 2.34 x 10²⁴
d. 8.127 x 10²³
Further explanation
Given
Number of moles of elements
Required
The number of particles
Solution
1 mol = 6.02 x 10²³ particles(molecules, ions, atoms)
Can be formulated :
N = n x No
No = Avogadro's number
n = mol
a. 2.5 mo Ca x 6.02 x 10²³ = 1.505 x 10²⁴
b. 7.26 mol Al x 6.02 x 10²³ = 4.37 x 10²⁴
c. 3.89 mol S x 6.02 x 10²³ = 2.34 x 10²⁴
d. 1.35 mol Pb x 6.02 x 10²³ = 8.127 x 10²³
