Na reação abaixo, foram utilizados como reagentes 100 g de ácido (aq) 140 g de base (s): Fe(OH) 3 + HCN → (Pesos atômicos: Fe= 56; O= 16; H= 1; C= 12; N= 14)

a) Que massa do reagente em excesso sobrará?
b) Qual a massa de sal que será produzida?
c) Qual o volume de vapor de água que será produzido, nas CNTP?
d) Supondo que a reação ocorra à pressão de 1 atmosfera e na temperatura de 207º.C; que volume o vapor de
água terá?

Two things that biomedical has invented or innvated

Label a-f based on the table using c for concentrated and d for dilute

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.