Ahydrogen electron jumps from energy level n = 2 to n = 4 after energy absorption. what will the spectral lines emitted by this electron look like under a spectroscope?
a. a dark line spectrum
b. white light
c. a continuous spectrum
d. a bright line spectrum

Avariable that is not being directly tested during an experiment should be

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.

How do i turn 2 s into one in the products