Which phase change is most likely taking place in this graph?

C3h8o3 - glycerol major species present when dissolved in water

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.