How many moles of chlorine are in 25.0 g of calcium chloride (CaCl₂)?

Question

Quizplus · Accepted Answer

The molar mass of calcium chloride (CaCl2) is calculated by adding the atomic masses of calcium (Ca = 40.08 g/mol) and chlorine (Cl = 35.45 g/mol) times two, since there are two chlorine atoms. This gives a molar mass of 40.08 + (35.45*2) = 111.08 g/mol. To find the moles of chlorine in 25.0 g of calcium chloride, first find the moles of calcium chloride: 25.0 g / 111.08 g/mol = 0.225 mol of CaCl2. Since each mole of CaCl2 contains 2 moles of chlorine, the moles of chlorine = 0.225 mol * 2 = 0.45 mol, which is closest to choice B, 0.451 mol.

How Many Moles of Chlorine Are in 25