Ascientist analyzes four samples of compounds. he finds the first compound contains 10 grams of sodium, 211 grams of potassium, 7 grams of lead, and 215 grams of zinc. the second sample contains 169 grams of zinc, 108 grams of lead, 88 grams of potassium, and 30 grams of sodium. the third sample contains 55 grams of lead, 254 grams of potassium, 56 grams of sodium, and 129 grams of zinc. the last sample contains 89 grams of sodium, 38 grams of lead, 64 grams of zinc, and 150 grams of potassium. use these data to make a table.

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.