If the 3.90 m m
solution from Part A boils at 103.45 ∘C
∘
C
, what is the actual value of the van't Hoff factor, i
i
? The boiling point of pure water is 100.00 ∘C
∘
C
and Kb
K
b
is equal to 0.512 ∘C/m

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

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.

Which of the following words describe the reality that the universe looks the same from various perspective