Answer:
Explanation:
Since we have $N_A$ number of molecules in 22.4 L, in 15 L we have:
$\frac{15}{22.4}\times 6.023 \times 10^{23}$ molecules.
Ionization energy
B extinction
as the species does not exist any more, the species is extinct, therefore making the pictured fossil of an extinct species
hope this helps
