Given:
0.607 mol of the weak acid
0.609 naa
2.00 liters of solution
The solution for finding the ph of a buffer:
[HA] = 0.607 / 2.00 = 0.3035 M
[A-]= 0.609/ 2.00 = 0.3045 M
pKa = 6.25
pH = 6.25 + log 0.3045/ 0.3035 = 6.25 is the ph buffer prepared.
I have no idea A and d maybe
The total mass of the protons is 1.338 * 10^-23 g
<h3>What is a proton?</h3>
A proton is the positively charged particle in an atom. It is found in the nucleus along with the neutrons and are collectively called the nucleons.
The hydrogen atom has only one proton while the nitrogen atom has seven protons. Thus makes a total of eight protons in the ammonia molecule.
Hence, the total mass of protons in the ammonia molecule =
8 ( 1.673 × 10^-24 g) = 1.338 * 10^-23 g
Learn more about protons:brainly.com/question/1252435
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First Find moles of LiOH (.235 moles/L X .01673L) You have .00423269 moles of LiOH. The Equation is written (HBr +LiOH -> LiBr + H2O), 1;1 Ratio. We find the molarity of HBr (.00423269 moles / .01 L). We are left with .42M HBr.
They are the sugars, starches, and fibers that’s found in fruits, vegetables, grains, and milk products.