1. Calculate the molar mass of C2H5O2N:

* C: 2 atoms * 12.01 g/mol = 24.02 g/mol

* H: 5 atoms * 1.01 g/mol = 5.05 g/mol

* O: 2 atoms * 16.00 g/mol = 32.00 g/mol

* N: 1 atom * 14.01 g/mol = 14.01 g/mol

Total molar mass of C2H5O2N = 75.08 g/mol

2. Convert grams of C2H5O2N to moles:

* moles = grams / molar mass

* moles = 5.00 g / 75.08 g/mol

* moles ≈ 0.0666 mol

3. Calculate the moles of nitrogen atoms:

* Since there is one nitrogen atom per molecule of C2H5O2N, the moles of nitrogen are equal to the moles of C2H5O2N: 0.0666 mol

4. Convert moles of nitrogen atoms to number of atoms:

* Use Avogadro's number: 6.022 x 10^23 atoms/mol

* atoms of nitrogen = moles of nitrogen * Avogadro's number

* atoms of nitrogen = 0.0666 mol * 6.022 x 10^23 atoms/mol

* atoms of nitrogen ≈ 4.01 x 10^22 atoms

Therefore, there are approximately 4.01 x 10^22 atoms of nitrogen present in 5.00 g of C2H5O2N.