To find how many grams of CaCl2 are in 0 mL of 2.0 M CaCl2 solution:

• Since the volume is 0 mL, the amount of CaCl2 dissolved is zero because no solution volume means no solute present.
• Mathematically, moles of CaCl2 = Molarity × Volume (in liters). Here, volume = 0 L, so moles = 2.0 mol/L × 0 L = 0 mol.
• Mass of CaCl2 = moles × molar mass. With 0 moles, mass = 0 g.

Therefore, there are 0 grams of CaCl2 in 0 mL of 2.0 M CaCl2 solution. For reference, if you had a nonzero volume, you would calculate the mass by:

1. Convert volume from mL to L.
2. Calculate moles = Molarity × Volume (L).
3. Multiply moles by molar mass of CaCl2 (approximately 110.98 g/mol) to get grams