In the reaction MgCl2 + 2KOH → Mg(OH)2 + 2KCI, if 3 moles MgCl2 are added to 4 moles KOH, what determines how much Mg(OH)2 is made? A. The amount of KCI
B. The amount of MgCl2
C. The amount of MgCl2 + KOH
D. The amount of KOH

Need on both questionswill markbr />

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.

What two categories of toxins were present in the air at dish,texas as a result of the gas pipelines that pass through the area