HELP FAST + explain PLZ! The combustion of propane, CH3CH2CH3, proceeds according to the following chemical reaction: CH3CH2CH3 + 5O2 → 3CO2 +4H2O. What are the parent shapes of the two product molecules? The order does not matter. A) linear and octahedral

B) trigonal pyramidal and linear

C) trigonal pyramidal and tetrahedral

D) bent and tetrahedral

E) tetrahedral and linear

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.