Question

Two identical pressurized-gas cylinders contain two different gases: N2 and H2. The cylinders have equal masses (with the gases inside) and are at the same temperature, 25 °C. Which one of the following statements about these systems is correct? A. None of the other statements is correct. B. Molecules of N2 move faster on average than molecules of H2. C. Both cylinders contain approximately the same number of molecules. D. The compressed N2 gas has a higher density than the compressed H2 gas. E. The pressure of the N2 gas is lower than the pressure of the H2 gas.

          Two identical pressurized-gas cylinders contain two different gases: N2 and H2. The cylinders have equal masses (with the gases inside) and are at the same temperature, 25 °C. Which one of the following statements about these systems is correct?
A. None of the other statements is correct.
B. Molecules of N2 move faster on average than molecules of H2.
C. Both cylinders contain approximately the same number of molecules.
D. The compressed N2 gas has a higher density than the compressed H2 gas.
E. The pressure of the N2 gas is lower than the pressure of the H2 gas.

Added by Jose R.

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