A 3,96.10^-4M solution of compound A exhibited an absorbance of 0,624 at 238nm in a 1cm cuvet, a blank solution containing only solvent had an absorbance of 0,029 at the same wavelength. find the molar absorbance of compound A

A concentrated solution of compound A in the same solvent was diluted from an initial volume of 2 ml to a final volume 25ml and then had an absorbance of 0,733. whai is the concentration of A in the concentrated solution