To solve this problem, we use Beer's Law: A= ε.l.c A is the absorbance- 0,558 <span>ε is</span> the molar absorptivity- is <span>15000 </span><span><span>L⋅mol-1</span><span>cm-1</span></span> <span>l is </span>the length of the cuvette- 1 cm <span>c is</span> the molar concentration
Applying the formula, 0,558= 15000 x 1 x c 0,558/15000= c c= <span>3.72×<span>10⁻⁵ </span> <span>mol⋅L<span>⁻¹</span></span></span> <span />