When the activating button is pushed, water mixes with calcium oxide. This produces calcium hydroxide in a chemical reaction which gives off heat. The heat warms up the food. What happens when this reaction occurs in the closed can? A.
The mass of the can and its contents remains the same.
B.
The mass of the can and its contents decreases.
C.
The mass of the can and its contents increases.
D.
The mass of only the food in the can decreases.