There are two balloons, both the same size and temperature. One balloon contains hydrogen and the other balloon contains carbon dioxide. The hydrogen balloon floats, and the carbon dioxide balloon sinks in the air. Which balloon contains a greater number of molecules?
A) The carbon dioxide balloon contains a greater number of molecules.
B) The hydrogen balloon contains a greater number of molecules.
C) Both balloons contain the same number of molecules.
D) This problem cannot be solved without more information given.

Question

Quizplus · Accepted Answer

Since both balloons are of the same size and at the same temperature, according to Avogadro's law, they contain the same number of molecules. Avogadro's law states that equal volumes of gases, at the same temperature and pressure, contain the same number of molecules.

There Are Two Balloons, Both the Same Size and Temperature