Prepare 250 ml of a phosphate-buffered saline solution (pbs) containing 0.138 m nacl, 0.0027 m kcl, 0.01 m phosphate using the correct amounts of sodium dihydrogen phosphate and disodium hydrogen phosphate to produce a solution with a ph of 7.4.
2) after you have calibrated your ph meter, measure and record the ph of the solution. if the ph is not 7.4, adjust the ph to 7.4 with either hcl or naoh. record the number of drops of naoh needed to bring the ph to 7.4.
3) bring the solution to final volume using a volumetric flask.
part b (group 2):
4) prepare 250 ml of a phosphate-buffered saline solution (pbs) containing 0.138 m nacl, 0.0027 m kcl, 0.01 m phosphate using sodium dihydrogen phosphate as the source of phosphate.
note: do not fill you volumetric flask completely to the 250 ml line, since you still need to add naoh to adjust ph.
5) measure and record the ph of the solution.
6) adjust the ph of the solution to 7.4 using 3.4 m naoh. record the number of drops of naoh needed to bring the ph to 7.4.
7) bring the solution to final volume of 250 ml using a volumetric flask.

question is

what percent of the conjugate acid is ionized at this ph?

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

explanation:

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

plasma - state of matter made up of electrically charged particles