What mass of Fe(NO3)3 do you need to prepare 250.00 mL of .750 M solution?

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A: I have given the answer in the explanation section. Hope you will understand that.

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A: 1.Ore are naturally  occurring minerals  from which metal can be extracted  profitably.

Q: 2. Dip-coating process is one of the methods for electrode surface modification.

A: Yes it is true ... Dip coating process us one the process of electrode surface modification

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.