A flask contains 1.00 mole of oxygen gas, O₂, at 0.00 °C and 1.013 × 10⁵ Pa. What is the rms speed of the molecules? Note: the atomic mass of O is 16 u.

Question

Quizplus · Accepted Answer

The rms speed (v_rms) is calculated using the formula v_rms = sqrt(3RT/M), where R is the gas constant (8.314 J/mol·K), T is the temperature in Kelvin (273.15 K for 0°C), and M is the molar mass in kg/mol (0.032 kg/mol for O2). Plugging in these values gives v_rms ≈ 460 m/s.

A Flask Contains 1