1. You divide the mass of the solute by the amount of solution. It is measured in moles. So 2moles/4 lters of liquid= solution of .5 mol/L
2.It shows the characteristics and properties of the substance easier.
3.amount of solute, temperature, pressure.
4.Solubility is dependent on temperature. It takes heat to make particles move and break apart.
5.Because it shows the characteristic property of matter.
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