Answer:
A.) 6.35
Explanation:
To find the mass of MgCl₂, you need to multiply the given value by the molar mass. The molar mass is made up of each element's atomic mass times their quantities. It is important to arrange the conversion in a way that allows for the cancellation of units.
Atomic Mass (Mg): 24.305 g/mol
Atomic Mass (Cl): 35.453 g/mol
Molar Mass (MgCl₂): 24.305 g/mol + 2(35.453 g/mol)
Molar Mass (MgCl₂): 95.211 g/mol
0.0667 moles MgCl₂ 95.211 grams
--------------------------------- x ------------------------ = 6.35 grams MgCl₂
1 mole
