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Calculate the molecular mass of [tex]\text{MgCl}_2[/tex] given that the atomic mass of [tex]\text{Mg}[/tex] is 24 and the atomic mass of [tex]\text{Cl}[/tex] is 35.5.

Answer :

Final answer:

The molecular mass of MgCl2 is 95 amu.

Explanation:

To calculate the molecular mass of MgCl2, we need to multiply the atomic mass of magnesium (Mg) by the number of magnesium atoms in the compound, and add it to the product of the atomic mass of chlorine (Cl) and the number of chlorine atoms in the compound.

The molecular formula of MgCl2 indicates that there is one magnesium atom (Mg) and two chlorine atoms (Cl) in the compound.

Therefore, the molecular mass of MgCl2 can be calculated as follows:

Molecular mass of MgCl2 = (Atomic mass of Mg) x (Number of Mg atoms) + (Atomic mass of Cl) x (Number of Cl atoms)

Substituting the given values:

Molecular mass of MgCl2 = (24 amu) x (1) + (35.5 amu) x (2)

Molecular mass of MgCl2 = 24 amu + 71 amu

Molecular mass of MgCl2 = 95 amu

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