cual es el flujo y el gasto de una manguera de 5cm de diámetro en la que fluye gasolina a razón de 8m/s

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

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.