The table below shows the elements in Group 6. They are listed in the same order as they are in the Periodic Table. Select the three correct
statements about the Group 6 elements below.

What is the equilibrium constant of aa+bb=cc+dd

2. how is heavy water different from normal water

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.