Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP?

(1) 5.0 L of CO2 (g) (3) 3.0 L of H2S (g)

(2) 2.0 L of Cl2 (g) (4) 6.0 L of He (g)

Question

Lisa Moyer

Chemistry

11 February, 00:46

Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP?

(1) 5.0 L of CO2 (g) (3) 3.0 L of H2S (g)

(2) 2.0 L of Cl2 (g) (4) 6.0 L of He (g)

+4

Answers (2)

Know the Answer?

Katie Sanders · Answer 1

The sample at STP that has the same total number of molecules as 2.0 liters of CO2 (g) at STP is 2) 2.0 L of CI2 (g)

Camryn Stevenson · Answer 2

Avogadro's law states that the volume of a gas is proportional to the number of moles. Also, the number of moles is proportional to the number of molecules (based on Avogadro's constant). Therefore, if 2 gas samples have the same volume, the have the same number of molecules, and the only choice with the same volume of 2.0 L is choice (2).

Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP?(1) 5.0 L of CO2 (g) (3) 3.0 L of H2S (g)(2) 2.0 L of Cl2 (g) (4) 6.0 L of He (g)

Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP?

(1) 5.0 L of CO2 (g) (3) 3.0 L of H2S (g)

(2) 2.0 L of Cl2 (g) (4) 6.0 L of He (g)