Percentage Concentrations

Concentrated Vs Diluted|Mass By Mass Percentage|Concentration Of A Solution|Exercise Questions|Exercise Questions|Mass By Volume Percentage|Volume By Volume Percentage

Mole fraction of ethanol is ethanol water mixture is 0.25. Hence, the percentage concentration of ethanol by weight of mixture is

Calculate the percentage concentration of the remaining solution when 500 g of a 20% solution by weight is cooled, 40 g of solute is precipitated.

For a first order reactions, the half -life is 10 mins. How much time in minutes will it take to reduce the concentration of reactant to 25% of its original concentration ?

K_(a) for an acid HA is 4.9 xx 10^(-8) . Calculate percentage dissocitation H^(+) ion concentration for its 0.1 M aqueous solution.

Empirical Formula And Molecular Formula|Numerical|Percentage Composition|Concentration Terms|Numerical|OMR

A plant cell with 0.5% concetration of salt in its cell sap is palced in a solution with 5% concentration of salt answer the following : (i)What will happen to the cell? (ii) How will you describe the concentration of the outside solution? (iii) What changes ar e required to bring back the normalcy of the cell ?

Introduction OF Chapter|| Concentration Terms||Percentage Weight by Volume|| Percntage Volume by Volume||Molarity,||Strength