The concentration of a solution is 0.4 M . What does it mean ?

The concentration of a solution is 0.4M.What does it mean?

Calculate the concentration of NaOH solution in g/mL which has the same normality as that of a solution of HCI of concentration 0.0365 g/mL.

The concentration of HCN and NaCN in a solution is 0.01 M each. Calculate the concentration of hydrogen and hydroxyl ions if dissociation constant of HCN is 7.2 xx 10^(-10)

Transistor-what does it mean ?

If 1 mol of an electrolyte is dissolved in V cm^(3) of a solution, then molar conductivity of the solution is Lambda_(m) = conductivity of the solution xx V. If the concentration of the solution is (M)/(10), then find the value of V.

The ionisation constant of phenol is 1.0xx10^(-10) . What is the concentration of phenolate ion in 0.05(M) phenol solution ? What will be its degree of ionisation if the solution is also 0.01(M) in sodium phenolate?

The concentration of an aqueous solution of the weak acid, HA is 0.1(M). Calculate the pH and concentrations of A^- ion and HA at equilibrium in the solution. Given: K_b(HA)=1.35xx10^(-3)

_______concentration of a solution does not depend on temperature.

The concentration of sulphide ion in 0.1M HCl solution saturated with hydrogen sulphide is 1.0xx10^(-19)M . If 10 mL of this is added to 5 mL of 0.04 M solution of the following: FeSO_(4),MnCl_(2),ZnCl_(2) and CdCl_(2) in which of these solutions precipitation will take place?