If i added 27 grams of salt to water and saparated the solution with a hot plate what amount of salt will be left behind

27 grams

Explanation:

27 grams of salt would still be left behind.

The dissolution of salt in water is a physical reaction and the salt can be recovered by evaporating off the water using appropriate procedures.

Provided that no part of the salt/water mixture is lost during the process of evaporation, if 27 grams of salt was dissolved initially, the same amount of salt would be recovered at the end of the separation process.

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