Children under the age of 6 with more than 0.10 ppm of lead in their blood can suffer a reduction in I.Q. or have behavior problems. What is the molality of a solution which contains 0.10 ppm of lead? A)4.8 × 10 ⁻¹⁰ m B)4.8 × 10 ⁻⁷ m C)4.8 × 10 ⁻⁴ m D)4.8 × 10 ⁻¹ m E)None of these choices are correct.

Question

Quizplus · Accepted Answer

The molality is calculated by converting ppm to molality using the formula: molality = (ppm / molar mass) / (density of solvent in kg/L). For lead, with a molar mass of 207.2 g/mol, the calculation gives approximately 4.8 × 10⁻⁷ m.

Children Under the Age of 6 with More Than 0