How many moles of nitrogen (N2) are needed to produce 9.60x10^24 molecules of nitrogen dioxide (NO2)? *

The number of moles of Nitrogen : == 7.975

Given

9.60x10²⁴ molecules  of nitrogen dioxide (NO2)

Required

The number of moles

Solution

Reaction

N2 + 2O2 → 2NO2

moles of NO2 :

= 9.6 x 10²⁴ : 6.02 x 10²³

= 15.95

From the equation, mol N2 :

= 1/2 x mol NO2

= 1/2 x 15.95

= 7.975

The number of molecules :

= 8 x 6.02 x 10²³

= 4.816 x 10²⁴

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.