Mole Road Map: ÷ ×
Mass (grams) ⇄ Moles ⇄ Particles (atoms, molecules, etc.)
× ÷
↓ ↓
Molar Mass 6.02 × 10^23 (Avogadro's number)
Molar Mass of Magnesium Chloride: 1 Mg: 24.3
+ 2 Cl: 2(35.5)
95.3 g/mol MgCl2
2.30 mol × 95.3 g/mol MgCl2 ≈ 219. grams MgCl2 (according to significant figures)