Question

find number of moles in 180 gm of N2O5 .

Answer 1

n205 mass is 28+80=108

108gm have 1 mole
180gm have x mole
108×x=180
number of moles=180/108 =1.66 moles
HOPE IT HELPS

Answer 2

★ Hi , there !!★

here is your answer !!


mole = mass / molecular mass


mass of two Nitrogen atom is = 2 × 14 g


=> 28 g


mass of 5 atom of oxygen => 5 × 16

=> 80 g


so , molecular mass => 80 + 28 g


=> 108 g


mole = 180 / 108 g


=> 1.66 mol



hope it helps you dear friend !!!


thanks !!