Which one of these samples contains the smallest number of molecules?
A) 1.0 L of H2 at STP (0°C and 1atm)
B) 1.0 L of N2 at STP
C) 1.0 L of H2 at 20°C and 760 torr
D) 1.0 L of N2 at 0°C and 800 torr
E) 1.0 L of He at STP
Correct Answer:
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