A52.0-ml volume of 0.35m ch3cooh (ka= 1.8*10^-5) is titrated with 0.40m naoh . calculate the ph after the addition of 21.0ml of naoh.

Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

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.