How many liters of sulfur trioxide would react with 68.9 L of water at STP to produce sulfuric acid?

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Apush or pull that moves or changes and object when to objects touch

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.