R2achabarar9iscobs
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A mixture consists of sand and an aqueous salt
solution. Which procedure can be used to separate
the sand, salt, and water from each other?
(1) Evaporate the water, then filter out the salt.
(2) Evaporate the water, then filter out the sand.
(3) Filter out the salt, then evaporate the water.
(4) Filter out the sand, then evaporate the water.

Respuesta :

jordoncas
the best answer is 4Ā Ā because if you get rid of the sand first and evaporate the water you're left with salt
Ishankahps

Answer is (4).

Explanation:

The given mixture contains anĀ insoluble solidĀ and anĀ aqueous solution of salt. Ā The insoluble solid isĀ sand.Ā 

FirstĀ we have to separateĀ insoluble solid.Ā Sand can be separated by doingĀ filtration.Ā When we filter the mixture sand can be seen as theĀ residueĀ on the filter paper.Ā 

After filtering the mixture, we should collect theĀ filtrate.Ā Filtrate is theĀ salt solution.Ā By doingĀ evaporationĀ we can get theĀ solid salt.Ā 

FirstĀ andĀ secondĀ choices areĀ wrongĀ becauseĀ after evaporating water filtration cannot be done and salt and sand will be mixed together.

Salt cannot be filteredĀ out because the salt is soluble and it isĀ in aqueous medium. Hence, third choice is wrong

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