Which of the following physical gas samples possess identical absolute masses when measured under st — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

Evaluate the mass of each sample in grams. (A) $1.0\text{ mole } O_2 = 1.0 \times 32\text{ g/mol} = 32\text{ g}$. (B) $3.011 \times 10^{23}$ molecules $SO_2 = 0.5\text{ moles}$. Mass $= 0.5 \times 64\text{ g/mol} = 32\text{ g}$. (C) $0.5\text{ moles } CO_2 = 0.5 \times 44\text{ g/mol} = 22\text{ g}$. (D) $1.0\text{ gram-atom}$ of S $= 1.0\text{ mole}$ of S atoms $= 32\text{ g}$. Samples A, B, and D all weigh exactly $32\text{ g}$.