In A, the picture shows a cylinder with 0.1 mol of a gas that
behaves ideally. Choose the cylinder (B, C, or D) that correctly
represents the volume of the gas after each of the following
changes. If none of the cylinders is correct, specify “none”.

A.            
               [
Select ]             
         [“D”, “none”, “C”, “B”]
        P is doubled at fixed n and
T.

B.            
               [
Select ]             
         [“C”, “D”, “B”, “none”]
        T is reduced from 400 K to
200 K at fixed n and P.

C.            
               [
Select ]             
         [“D”, “B”, “C”, “none”]
        T is increased from 100°C to
200°C at fixed n and P.

D.            
               [
Select ]             
         [“B”, “D”, “C”, “none”]
        0.1 mol of gas is added at
fixed P and T.

E.            
               [
Select ]             
         [“none”, “B”, “D”, “C”]
        0.1 mol of gas is added and P
is doubled at fixed T.