1. Avogadro's Number
* Avogadro's number tells us the number of particles (atoms, molecules, ions, etc.) in one mole of a substance. It's approximately 6.022 x 10²³ particles/mole.
2. Calculation
* Step 1: Multiply the number of moles by Avogadro's number:
1.56 moles MgCO₃ * (6.022 x 10²³ molecules/mole) = 9.39 x 10²³ molecules
Answer: There are approximately 9.39 x 10²³ molecules in 1.56 moles of magnesium carbonate.
