Which statement best describes the use of a chemical indicator in a titration?
a. a measure of the quantity of acid dissolved in water designated by molarity
b. an intrinsic characteristic of a particular acid, not related to concentration
c. the amount of hydrogen ions present in the acid
d. the amount of hydroxide ions present in a solution

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

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.

How many atoms are in 2 moles of phosphorus