How many molecules are present in 4.39 x 10-2 mol of SICIA? a.2.64 x 1022 molecules
b. 7.29 x 10-26 molecules
c. 4.35 x 1026 molecules
d. 2.56 x 1024 molecules
e. 2.64 x 1026 molecules

What is the solubility of substance?

What is a metal replacement reaction

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.