Calculate the mass of magnesium chloride that is formed by the interaction of 4.8 grams of magnesium with chlorine.

1. Let’s compose the equation of the chemical reaction.

Mg + Cl2 = MgCl2.

2. Calculate the amount of magnesium reacted.

n (Mg) = m (Mg) / M (Mg) = 4.8 g / 24 g / mol = 0.2 mol.

3. Using the reaction equation, we find the mass of magnesium chloride.

n (MgCl2) = n (Mg) = 0.2 mol.

m (MgCl2) = n (MgCl2) * M (MgCl2) = 0.2 mol * 95 g / mol = 19 g.

Answer: m (MgCl2) = 19 g.

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