Which one of these samples contains the smallest number of particles (atoms or molecules)? Explain your logic.
1.0 L of H₂ at STP (0^$\circ$C and 1 atm)
1.0 L of N₂ at STP
1.0 L of H₂ at 20^$\circ$C and 760 torr
1.0 L of N₂ at 0^$\circ$C and 800 torr
1.0 L of He at STP

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The Answer of Which one of these samples contains the smallest number of particles (atoms or molecules)? Explain your logic. 1.0 L of H₂ at STP (0 $\circ$ C and 1 atm) 1.0 L of N₂ at STP 1.0 L of H₂ at 20 $\circ$ C and 760 torr 1.0 L of N₂ at 0 $\circ$ C and 800 torr 1.0 L of He at STP

Which One of These Samples Contains the Smallest Number of Particles