Sequence the following acids according to their acidity from weak to strong. (3 pts) (1) HSO3F/SbF5 (Magic acid), (2) H2SO4, (3) HSO4-, (4) fluorosulfonic HSO3F Name a reaction between a BL acid and BL base, and point out the acid-base conjugate pairs. (4 pts)

Calculate the number of moles of ethane in 100 grams

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.

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!