Which of the following is correct about the motion of the objects? A. Object Q is not moving at all .B. Object S is traveling at a faster speed than Object R. C. Object R is increasing in speed by 2 m/s. D .Object R is traveling at a slower speed than Object S.

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

In apex! a liquid heated beyond a certain temperature becomes

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.