Question

At the same temperature and pressure, equal volumes gases contain the same number of _____________.

• A. atoms
• B. electrons
• C. molecules
• D. protons

Answer 1

The correct option is C molecules

: Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules". For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.