Answers: 3
Chemistry, 22.06.2019 14:00
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.
Answers: 3
Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
Chemistry, 22.06.2019 16:30
How many grams of mgbr2 are needed to produce 75g or metal?
Answers: 1
Chemistry, 22.06.2019 19:30
What is the common name for the compound shown here? enter the common name of the compound shown?
Answers: 2
What is the approximate mass of one electron?...
Medicine, 20.01.2021 07:20
Mathematics, 20.01.2021 07:20
Mathematics, 20.01.2021 07:20
History, 20.01.2021 07:20
Mathematics, 20.01.2021 07:20
Mathematics, 20.01.2021 07:20
Spanish, 20.01.2021 07:20
Mathematics, 20.01.2021 07:20
History, 20.01.2021 07:20
Mathematics, 20.01.2021 07:20
English, 20.01.2021 07:20
English, 20.01.2021 07:20