The number of molecules in 100 moles can be calculated using Avogadro's number, which is approximately \(6.02 \times 10^{23}\) molecules per mole. Therefore, in 100 moles, the number of molecules would be:
\[ 100 , \text{moles} \times 6.02 \times 10^{23} , \text{molecules/mole} = 6.02 \times 10^{25} , \text{molecules} \]
So, the correct answer in scientific notation is:
6.02 * 10²⁵.