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I've been studying MCAT for a while and I still can't connect concepts of bouyancy and density to hot airballoons.
I know that to rise...the density of air inside the hot airballoon must be less than density of air outside.
1. What are different ways to reduce and increase density?
Volume stays constant usually right? Since volume is just the volume of balloon which is how much air is displaced? We can decrease pressure to decrease moles of air inside balloon or increase temperature at constant pressure to decrease (pv=nrt) moles which both decrease density of air inside balloon. This helps balloons float?
Overall, the idea behind balloons confuses me and I loose track of how changes can be made to balloons and how these changes affect bouyancy.
I know that to rise...the density of air inside the hot airballoon must be less than density of air outside.
1. What are different ways to reduce and increase density?
Volume stays constant usually right? Since volume is just the volume of balloon which is how much air is displaced? We can decrease pressure to decrease moles of air inside balloon or increase temperature at constant pressure to decrease (pv=nrt) moles which both decrease density of air inside balloon. This helps balloons float?
Overall, the idea behind balloons confuses me and I loose track of how changes can be made to balloons and how these changes affect bouyancy.