Fakeium has four isotopes found on Earth but they’ve only been recently discovered. Do your part as a scientist and calculate the average atomic mass for fakeium so it can be added to the periodic table. Fa - 85 is 31% of all the isotopes found.

Fa - 86 is 12% of all the isotopes found.

Fa - 87 is 38% of all the isotopes found.

Fa - 88 is 19% of all the isotopes found.

CHOICES:

84.65 g

87.00 g

87.50 g

86.45 g

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.