What kind of weather periods are usually followed by cholera and malaria outbreaks? a. excessive rain and cold b. moderate temperatures with low moisture c. excessive rain and heat d. extreme dry heat

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

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.