The mass of the chlorophenol is obtained from the number of moles and the volume of the solution.
Recal that;
Number of moles = concentration of solution * volume of solution
Concentration = 47.0 mM or 47.0 * 10^-3 M
Volume = 1.00 litre
Number of moles = 47.0 * 10^-3 M * 1.00 litre
Number of moles = 47.0 * 10^-3 moles
Also;
Number of moles = mass/molar mass
mass = Number of moles * molar mass
Mass = 47.0 * 10^-3 moles * 128.6 g/mol
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Mass = 6.0442 g
