Given the reactions: 1) HF ⇔ H⁺ + F⁻ K= 6.8 x 10⁻⁴
2) 2HF + C₂O₄²⁻ ⇔ 2F⁻ + H₂C₂O₄ K= 0.24
Determine the value of the equilibrium constant for the reaction:
3) H₂C₂O₄ ⇔ 2H⁺ + C₂O₄²⁻

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.

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number

Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206