How many atoms of N are in 0.82 g of NaNO3? ( molar conversion)

The number of atoms N = 5.8 x 10²¹

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12  

1 mole = 6.02.10²³ particles  

mass of N in 0.82 g of NaNO₃ (MW NaNO₃: 85 g/mol) :

moles of N :

The number of atoms N :

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explanation:

i think option no d is the correct answer