53. A student performed a reaction between 2.89 g of Co(NO3)2 (aq) and 0.140 g of NaOH (aq) in 57.98 mL of water. Answer the following questions based on this reaction. (19 total points) a. What is the concentration of the Co(NO3)2 and the NaOH initially in the 57.98 mL of water? (4 points) b. Write out a balanced molecular and net ionic equation for the reaction. (5 points) c. Which species is limiting in this reaction? (4 points) d. If there is a precipitate, how many grams should you obtain? (4 points) e. If you obtained 0.160 g of the product, what is the percent yield? (2 points)

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors

Answer asap need to be answered 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.

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m