In the following equilibrium, as the concentration of CrO 4 -2 ion is increased, the concentration of Cr 2O 7 -2 ion will 2 CrO 4 -2(aq) + 2 H +1(aq) - Cr 2O 7 -2(aq) + H 2O (l)
a. Increase b. Decrease c. Remain the same

Iknow #2 is d. i just need to know why

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

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.