A sample of CH₂F₂ with a mass of 19 g contains ________ atoms of F. A)2.2 × 10²³ B)38 C)3.3 × 10²⁴ D)4.4 × 10²³ E)9.5

Question

Quizplus · Accepted Answer

The molar mass of CH₂F₂ is approximately 52 g/mol. Therefore, 19 g of CH₂F₂ is about 0.365 moles. Since each molecule of CH₂F₂ contains 2 fluorine atoms, the number of fluorine atoms is 0.365 moles × 2 × Avogadro's number (6.022 × 10²³), which equals approximately 4.4 × 10²³ atoms.

A Sample of CH2F2 with a Mass of 19 G

A Sample of CH₂F₂ with a Mass of 19 G