Antonio has just graduated from four years of college. for the last two years, he took out a stafford loan to
each loan had a duration of ten years and interest compounded monthly. antonio will pay each of them bac
monthly payments, starting as he graduates. antonio's loans are detailed in the table below.
interest rate (%)
year
junior
senior
loan amount ($)
5,894
5,258
6.9
subsidized?
y
n
7.5
once all of his loans are paid off, what will antonio's total lifetime cost be? round all dollar values to the
a. $16,246.80
b. $17,804.40
$7,593.16
d. $9,874.76
select the heat

Answer asap need to be answered 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.

What is the significance sodium hydroxide and hydrochloric acid

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion