Describe how you would prepare exactly 80 ml of a 0.2 m solution of glycerol in water. the molecular weight of glycerol is 92.1 g/mol. the density of glycerol is 1.26 g/ml 4.what is the concentration of a 1: 10 dilution of a 2.5 m solution of nacl? how would you prepare exactly 100 ml of such a solution?

Which best describes why nh4+ can form an ionic bond with ci-?

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.

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j