The maximum number of molecules is present in :

Options

A. (a)`15" L of" H_(2)` gas at STP
B. (b)`5` L of `N_(2)` gas at STP
C. (c )`0.5` g of `H_(2) gas`
D. (d)`10` g of `O_(2) gas`

Answer

A

Explanation

Moles of `H_(2)=15/22.4=0.67`
Moles of `N_(2)=5/22.4=0.22`
Moles of `H_(2)=0.5/2=0.25`
Moles of `O_(2)=10/32=0.31`
larger is the number of mole, the more is the number of molecule.