Burping and farting are tiny, but if we’re talking gasses and changing weight, the vast majority of the mass you lose from fat when you lose weight actually comes out in your breath.
OP’s concept seemed to be about buoyancy. In the same way that a hot air balloon weighs more when it releases hot gas, so too should a human weigh more when they release hot gas. So the question comes down to, is the decrease of buoyancy force more or less than the weight of the ejected gas molecules?
Burping and farting are tiny, but if we’re talking gasses and changing weight, the vast majority of the mass you lose from fat when you lose weight actually comes out in your breath.
OP’s concept seemed to be about buoyancy. In the same way that a hot air balloon weighs more when it releases hot gas, so too should a human weigh more when they release hot gas. So the question comes down to, is the decrease of buoyancy force more or less than the weight of the ejected gas molecules?
Well it depends on the pressure the gases are being kept under. Higher pressure and you gain buoyancy. Low pressure and you lose it.