FW (g/mol) b. p (oC) Density (g/mL) Hazards acetaldehyde 44.05 20.1 0.78 Highly Flammable
Irritant to eyes
Hazardous if swallowed
benzaldehyde 106.12 179 1.05 Highly Flammable
Hazardous if swallowed
1. Determine the molecular formula and formula weight of the product, 3-hydroxy-3-phenylpropanal.
2. Calculate the theoretical yield of 3-hydroxy-3-phenylpropanal in grams (the amounts of the starting materials are given in the procedure). Show calculation with units for full credit.

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.