g If 3.7 g of aluminum, Al, reacts completely with O2 to form aluminum oxide, what mass of aluminum oxide would be produced

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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.