Molar mass of N2 = 28.02 g/mol
mass(N2)= 1.73 g
use:
number of mol of N2,
n = mass of N2/molar mass of N2
=(1.73 g)/(28.02 g/mol)
= 6.174*10^-2 mol
use:
number of molecules = number of mol * Avogadro’s number
number of molecules = 6.174*10^-2 * 6.022*10^23 molecules
number of molecules = 3.718*10^22 molecules
Count of each element in compound is:
{N=2}
Total number of atoms in 1 molecule = 2
use:
number of atoms = number of molecules * Total number of atoms in 1 molecule
number of atoms = 3.718*10^22 * 2
number of atoms = 7.436*10^22
Answer: 7.44E22
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