What is the relationship between a mole and avogadro's number?
o amole is the mass of avogadro's number of particles of a substance.
o a mole is the amount of a compound that has avogadro's number of carbon-12 atoms in it.
o amole contains avogadro's number of particles of a substance.
o amole is the amount of any substance that has the same mass as avogadro's number of carbon-12 atoms.

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.

•hydration •dissociation •dissolving which one goes to which

What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water