Aspectrophotometry experiment was conducted for the following reaction, which occurred in a 1.10 cm cuvette. the initial concentration of the blue reaciton was 0.75a(aq) (colorless)+b(aq) (blue)→c(aq) (colorless)+d(aq) (colorless)absorbance, a time, t 0.77 0.00s 0.67 30.00s 0.60 60.00sa. find the molar absorptivity coefficient, a, for the blue reactant. b. find the initial rate of the reaction.

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.