# How many moles of chloride ion are present in a 47.6*g mass of MgCl_2?

A mole of magnesium chloride contains one mole of magnesium ion, and 2 moles of chloride ions. And these molar quantities relate directly to masses. One mole of magnesium chloride has a mass of $\left(24.3 + 2 \times 35.45\right) \cdot g \cdot m o {l}^{-} 1$, and what is the mass of chloride ion in the given quantity?