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## Main Question or Discussion Point

I read that when salt and water are mixed that the overall volume decreases by 2.5% (I'm not sure if this is relative to the original volume of the water or both the water and the salt). I'm not sure why this is the case and am interested in that.

Moreover, I'd like to know how one would calculate the final volume of such a mixture. I know one person who believed if a gallon of salt was dumped into 100 gallons of water that the final volume would be 101 gallons. I also know a different person who believed the final volume would be 100.

Are there straightforward ways to calculate things like this? I remember doing calculations with mols in college but I'm not sure if we ever worked on mixture volumes.

Thanks,

techphets

Moreover, I'd like to know how one would calculate the final volume of such a mixture. I know one person who believed if a gallon of salt was dumped into 100 gallons of water that the final volume would be 101 gallons. I also know a different person who believed the final volume would be 100.

Are there straightforward ways to calculate things like this? I remember doing calculations with mols in college but I'm not sure if we ever worked on mixture volumes.

Thanks,

techphets