Task: Explanation
Input (English): Question: Reid puts the same amount of gas in a 20ml container and a 10ml container. The container with the densest gas will be the _____ container. 
 Answer: 10ml
Output (English): If we take a certain amount of gas from one container and place it into another, larger container, the gas expandsto fill the larger container. The same mass of gas is now in a larger volume, the gas now has a lower density.