engineering chemistry MCQ #3412

A gas has a density of 1.2 g/L at 1 atm and 27°C. What is its molecular weight?

engineering chemistry MCQ #3412

  1. Question 1

    Q1. A gas has a density of 1.2 g/L at 1 atm and 27°C. What is its molecular weight?

    • A) 29.5
    • B) 30.0
    • C) 28.8
    • D) 32.0

    Answer: 29.5

    Explanation: Use d = PM / RT to find M: M = dRT / P = 1.2 * 0.0821 * 300 / 1 = 29.5 g/mol.