Does anyone on here have Yahoo! Messenger and is willing to help me understand my Chemistry? I am in Normality, Molality, Molarity, Percent By Mass and PPM and I pretty much understand everything except Molality.
There are 4 problems I got completely wrong, and it would be great if someone could walk me through solving them.
1.) calculate the molality of a 25% sulfic acid solution.
2. )Calculate the normality of 7,00 m (molality) Phosporic acid solution (density of solution= 1.2 g/mL) in reactions that replace all hydrogen ions.
3.)Calculate the Molarity of a 2.5 m ethyl Alcohol (C2H6O) solution (density of solution= .941 g/mL)
4.) Calculate the percent by mass of a 3.75 m Phosphoric acid solution.
Any help from anyone would be great!
2007-04-04 11:36:12 · 1 answers · asked by C 1 in Science & Mathematics ➔ Chemistry
Let water solvent be called S.
25gH2SO4/75gS x 1molH2SO4/98gH2SO4 x 1000gS/1kgS = 3.4 molal = 3.4molH2SO4/1kgsolvent.
2007-04-04 11:45:56 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋