mol = mass/ molar mass
So look up the molar mass of nitrogen on your periodic table, which is 14
But REMEMBER it's asking for nitrogen gas which is N2
So, molar mass= 2*14= 28 g/mol
mol= (14g)/ (28 g/mol)= 0.5 mol
So now you got your number of moles
at STP mol= volume/ 22.4 dm^3
so (0.5)(22.4)= 11.2 dm^3 which is 11.2 L
yo, just memorize them mole formulas and you'll be good fam-- just make sure to pay attention to STP or SATP, and if they're asking for "gas" or just the atom!
