Why might a tank vehicle carrying a dense liquid, like certain chemicals, need different handling than one carrying a lighter liquid at the same volume?

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1. A denser liquid weighs more for the same volume, which changes the vehicle's total weight and stopping distance
2. Liquid density has no effect on the vehicle's weight, since weight is set only by how full the tank looks, which is not how the system is actually designed to work in practice
3. Only the tank's color changes with liquid density
4. Denser liquids always reduce surge to zero

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