Question

$100\, mL \,O _{2}$ and $H _{2}$ kept at same temperature and pressure. What is true about their number of molecules

• A. $NO _{2}> NH _{2}$
• B. $NO _{2}< NH _{2}$
• C. $NO _{2}= NH _{2}$
• D. $NO _{2}+ NH _{2}=1 $ mole

Answer 1

Answer: (C)

This is Avogadro’s hypothesis.
According to this, equal volume of all gases contain equal no. of molecules under similar condition of temperature and pressure.