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How are the terms 'critical concentratio...

How are the terms 'critical concentration' and 'deficient' different from each other in terms of concentration of an essential element in plants ?
Can you find the values of 'critical concentration' and 'deficient' for minerals -Fe and Zn ?

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Critical concentration represents the value of an essential element which just meets the minimum needs of a plant. The essential element is called deficient when it is present below critical concentration. The concentration in Fe and Zn, when deficiency symptoms appear represents the .deficient value and the experimental set up, where just on or above it there is no deficiency symptom but growth is less represents the critical concentration.
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The concentrations of soluitons can be expressed in number of ways , viz : mass fraction of solute (or mass percent), Molar concentration (Molarity ) and Molal concentration (molality). These terms are known as concentration terms and also they are related with each otehr i.e., knowing one concentration terms for the solution, we can find other concentration terms also. the definition of different cencentration terms are given below: Molarity : It is number of moles of solute present in one litre of the solution. Molality : It is the number of moles of solute present in one kg of the solvent. Mole fraction =("Mole of solute")/("Moles of solute" + "Moles of solvent") If molality of the solution is given as a, then mole fraction of the solute can be calculated by Mole Fraction =(a)/(a+(100)/(M_("solvent"))),=(axxM_("solvent"))/((a xx M_("solvent")+1000)0 where a=molality and M_("solvent") =Molar mass of solvent We can change : Mole fraction hArr Molality hArr Molarity What is the molality of the above solution?