Which of the following definitions best describes a parallel of latitude? a--A line that is drawn horizontally around the earth and is parallel to the Prime Meridian.

b---A line that is drawn vertically down the earth and is parallel to the equator.

c--A line that is drawn vertically down the earth and is parallel to the Prime Meridian.

d--A line that is drawn horizontally around the earth and is parallel to the equator.

What three natural resources are found in the great lakes region

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.

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.