Multiple choice

Equal volumes of different gases at any definite temperature and pressure have

  1. equal weight

  2. equal mass

  3. equal density

  4. equal no. of molecules

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is Avogadro's Law - equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. The law is fundamental to understanding gas behavior and explains why gas reactions occur in simple whole-number ratios. Mass, weight, and density vary widely between different gases at equal volumes.

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