What volume do 3 mol of an ideal gas occupy at STP? (molar volume 22.4 L)

Answer and explanation

Correct answer: D. 67.2 L

  1. Step 1: At STP one mole occupies 22.4 L.
  2. Step 2: V = 3 x 22.4 = 67.2 L.
Answer
67.2 L.
Why not the others: 7.467 L, 73.5 L and 134.4 L do not fit.

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