4. Nickel standard solution containing 2.5*10-6 mol/l nickel has an optical density of 0.71. What will be the optical density if the solution is diluted 5 times. Calculate the average value of the molar absorption coefficient if the thickness of the absorbing layer is 1 cm.

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.