9 In two flasks:of having equalivolume; fläsk A-contains CH gas: at 35°C and 110

Question

9 In two flasks:of having equalivolume; fläsk A-contains CH gas: at 35°C and 1100 atmmandiflask Bicontains CH+ gas at 35 Candi1100 atmWhictrstatementis correct? All the following statements concerning a sampte:ofigas at 1100 atm pressure are true EXCEPT (HINE USE only the 1st 4 choices to ANSWER 1st parts of the question) A Flask B has more moleeules B Flask A has more molecules C. Flask A contains more grams of gas because CHg has more grams per mole than CH D. The average speed of the molecules in both flasks will decrease if the temperature increases E the molecules are in constant rapid random motion F the pressure exerted by gas is due to the impact of the molecules with the wails of the container G. the average kinetic energy of the gas is proportional to the temperature of the gas. H the volume occupied by the molecules is small compared with the space between the molecules I A 1.0 Liter sample of H, gas has the same mass as a 1.0 Liter sample of N, gas, if both samples are at STP

Explanation / Answer

First part.

Among the four choices choice C is correct.

Statements A and B are wrong because C3H8 and CH4 both are having same volume, same temperature and same pressure, so there should be same number of moles and then same number of molecules in flask A and flask B.

Statement D also wrong if temperature increases then speed of the molecules.

Statement C is correct. Because both the flasks are having same number of moles but C3H8 has greater nolar mass(44g/mol) than CH4 (16g/mol). So there should be more mass in flask A than in flask B.  

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