1. Even though you used different amounts of NaSCN for each test mixture the values of Kc you measured for each should be similar. Explain why you obtained a similar value of Kc even though each mixture had a different [SCN-]init. Hint: consider the [Fe3+]eq and [FeSCN2+]eq in each mixture.

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.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?