# Chemistry 12

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In s 0.30 mol/L HNO3(aq) solution.
a) what is the concentration of nitric acid molecules.
b)what is the hydroxide ion concentration?

• Chemistry 12 -

(a) In aqueous solution there are no HNO3 molecules. Only ions are present.
(b) (H^+)(OH^-) = 1E-14
(H^+) = 0.30. Solve for (OH^-)

• Chemistry 12 -

Thank you! I am still confused about b)

• Chemistry 12 -

NVM, i got it! thanks!

• Chemistry 12 -

is it true that at 20ºC, 100g = 100mL （for water)

• Chemistry 12 -

How do we determine the specific gravity of a solution? and what unit is it in?

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