It should remain constant because of the law of conservation of mass and because the flask is sealed no mass will escape
Explanation:
The more reactive element replaces less reactive element during chemical reaction.
Since, potassium is more reactive than beryllium. When potassium reacts with beryllium choride, it replaces beryllium and forms potassium chloride and produces beryllium.
Answer: come on man its not that hard
Explanation:
