1. Avogadro's Number:
* Avogadro's number tells us the number of particles (atoms, molecules, etc.) in one mole of a substance. It's approximately 6.022 x 10^23 particles per mole.
2. Calculation:
* Multiply the number of moles by Avogadro's number:
1.125 moles Na2SO4 * (6.022 x 10^23 molecules/mole) = 6.775 x 10^23 molecules of Na2SO4
Therefore, there are approximately 6.775 x 10^23 Na2SO4 molecules present in 1.125 moles.
