If 2.00 liters of 4.00M KOH neutralizes a HNO3 solution whose concentration is 8.00M, how many liters of HNO3 were neutralized? Show
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Joan writes four numbers on the board in standard form, and then she writes their scientific notation

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.

Correct relationship between molecular formula and empirical formula