Calculate the number of chlorine atoms in 10.4 grams of chloroform, CHCl₃.

Question

Quizplus · Accepted Answer

First, calculate the molar mass of chloroform (CHCl3): Carbon (C) = 12.01 g/mol, Hydrogen (H) = 1.01 g/mol, Chlorine (Cl) = 35.45 g/mol x 3 = 106.35 g/mol. Total molar mass = 12.01 + 1.01 + 106.35 = 119.37 g/mol. Then, calculate the moles of chloroform in 10.4 g: 10.4 g / 119.37 g/mol = 0.0871 mol. Since each molecule of chloroform contains 3 chlorine atoms, the total number of chlorine atoms = 0.0871 mol x 3 x Avogadro's number (6.022 x 10^23 atoms/mol) = 1.57 x 10^23 atoms.

Calculate the Number of Chlorine Atoms in 10