BEEN STUCK ON THIS FOR THREE HOURS. GIVING 50 POINTS TO ANYONE WHO SOLVES!

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Is this a single replacement reaction or there is no

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.