Give balanced equations for the following conversions: 1. Zinc to sodium zincate - using an alkali
2. Acidified water to hydrogen - by electrolysis
3. Water gas to hydrogen - industrially
4. Iron (III) oxide to iron - using hydrogen
5. Nitrogen to a basic gas - using hydrogen

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

In which phase(s) do the molecules take the shape of the container?

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.