Three identical flasks contain three different gases at standard temperature and pressure.Flask A contains $\mathrm { C } _ { 2 } \mathrm { H } _ { 4 }$ flask B contains O₃,and flask C contains F₂.Which flask contains the largest number of molecules?

Question

Quizplus · Accepted Answer

The number of molecules of a gas is determined by its molar mass and the amount of the gas (in moles) in the flask. Since all three flasks contain the same amount of gas at the same temperature and pressure, they also contain the same number of moles of gas. Therefore, they must all contain the same number of molecules, and the answer is (D) all contain the same number of molecules.

Three Identical Flasks Contain Three Different Gases at Standard Temperature C2H4\mathrm { C } _ { 2 } \mathrm { H } _ { 4 }C2​H4​

Three Identical Flasks Contain Three Different Gases at Standard Temperature $\mathrm { C } _ { 2 } \mathrm { H } _ { 4 }$