Question

1. choose the best answer.

avogadro stated that equal volumes of gases under the same conditions of temperature and pressure have equal ____
○ molar masses
○ numbers of particles
○ velocities

Explanation:

Avogadro's Law defines that equal volumes of all gases, at the same temperature and pressure, contain the same number of molecules (particles). The other options are incorrect: molar masses vary between gases, and gas velocities depend on molar mass and temperature, not volume under identical conditions.

Answer:

○ numbers of particles