The element M forms the chloride MCl₄ containing 75.0% Cl by mass. What is the atomic weight of M?

Question

Quizplus · Accepted Answer

To find the atomic weight of M, use the formula: %Cl = (mass of Cl in MCl4 / molar mass of MCl4) * 100. Given 75% Cl, let x be the atomic weight of M. Molar mass of Cl4 = 4 * 35.5 = 142 g/mol. Molar mass of MCl4 = x + 142. Set up the equation: 75 = (142 / (x + 142)) * 100. Solving for x gives approximately 47.3 g/mol.

The Element M Forms the Chloride MCl4 Containing 75

The Element M Forms the Chloride MCl₄ Containing 75