Question

1. How many molecules are in 4.5 moles?

Answer 1

depends on what molecule you are looking for

Step-by-step explanation:

In one mole of stuff (atoms, molecules, eggses), there are NA individual items of that stuff. So, there are 4.5 × NA BCl3 molecules; i.e. 4.5 × 6.022×1023 ≅ 27×1023 individual molecules of BCl3