Here's why:
* Schwa sound: The schwa sound is a neutral vowel sound represented by the symbol /ə/. It's a very common sound in English, and it often occurs in unstressed syllables.
* "Money" pronunciation: The word "money" has two syllables: "mon" and "ey". The first syllable, "mon", is stressed, while the second syllable, "ey", is unstressed.
* Unstressed syllable: In the unstressed syllable "ey", the vowel sound is reduced to a schwa sound.
So, the pronunciation of "money" is /ˈmʌni/, with the schwa sound occurring in the second syllable.