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A 7.00 mL sample of blood serum has a pH of 7.38

a. What is the concentration of H3O+?
b. What is the concentration of OH-?
c. How many moles of H3O+ are present?

I have no clue what to do and I don't have a calculator with me someone help me I would really appreciate it.

1 answer

pH = -log(H3O^+) = 7.38
(H3O^+) = 4.16E-8

b. (H3O^+)(OH^-) = 1E-14
c. mols = M x L = ?

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