3- Write the ideal properties of the precipitate during gravimetric analysis.

In an ideal world, an analytical precipitate for gravimetric analysis should consist of perfect crystals large enough to be easily washed and filtered.

(i.e. be of such slight solubility that loses from dissolution would be minimal).

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the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).