Using the graph below,determine the gas that has the lowest density at STP.
A)A
B)B
C)C
D)D
E)All of the gases have the same density at STP.

Question

Using the graph below,determine the gas that has the lowest density at STP. 
A)A 
B)B 
C)C 
D)D 
E)All of the gases have the same density at STP.

Quizplus · Accepted Answer

The gas represented by line A has the lowest density at STP, as it has the lowest molar mass of all the gases shown on the graph. The lower the molar mass, the lower the density at a given temperature and pressure. Therefore, A is the correct answer.

Using the Graph Below,determine the Gas That Has the Lowest