The mass of a deflated balloon is typically different from that of an inflated balloon. When a balloon is inflated, it contains air or another gas, which adds mass to the overall system. The gas molecules occupy space and contribute to the total weight of the balloon.
When a balloon is deflated, it contains little or no gas inside. In this state, the balloon is typically lighter because it primarily consists of the material from which it is made, such as latex or rubber. The mass of the deflated balloon is determined by the mass of the balloon material itself.
It's worth noting that the difference in mass between an inflated and deflated balloon can vary depending on the size and thickness of the balloon material. Additionally, if the gas inside the balloon is significantly denser or lighter than the surrounding air, it can further affect the overall mass.