In one mole of dinitrogen pentoxide (N2O5), there are 2 nitrogen atoms present. This can be understood by looking at the chemical formula of dinitrogen pentoxide, which shows that there are two nitrogen atoms (N) in each molecule of N2O5.
To further explain:
1. The subscript "2" in N2O5 indicates that there are 2 nitrogen atoms in one molecule of dinitrogen pentoxide.
2. Avogadro's number tells us that in 1 mole of any substance, there are 6.022 x 10^23 particles.
3. Therefore, in one mole of dinitrogen pentoxide (N2O5), there are 2 moles of nitrogen atoms (2 N atoms per molecule) which is equivalent to 2 x 6.022 x 10^23 = 1.2044 x 10^24 nitrogen atoms.
So, in conclusion, one mole of dinitrogen pentoxide contains 1.2044 x 10^24 nitrogen atoms.
