Please show calculations for these 2 questions.
How many grams of copper (II) fluoride are needed to make 587.2 ml of a 3.28 M solution?
The molar absorptivity constant of a particular chemical is 1.89 M·cm. What is the concentration of a solution made from this chemical that has an absorbance of 0.536 with a cell path length of 1.19 cm?