reghanhoward3

29.12.2019 • 

Chemistry

The ache or "burn" you feel in your muscle during strenuous exercise is caused by the accumulation of lactic acid. the hydrogen atom of the cooh group is acidic, and it can be removed using base to form a cooh- group. to determine the concentration of a solution of lactic acid,a chemist titrates a 24.25ml sample of it with 0.1010 m naoh, and it finds that 14.83m: of titrate is required to reach teh equivalent point.

Ответ:

Bluefurry06

13.01.2022

Chemistry

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Given the amount of sample: 24.25 mL;
the concentration of the titrant (NaOH) = 0.1010 mol / L NaOH
the amount of the titrant used for titration = 14.83 mL

The concentration of a solution of lactic acid is determined by:

C(lactic acid in the sample) = ((0.1010 mol / L) * (14.83mL/1000) / (24.25mL/1000)

C = 0.0618 mol/L

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Ответ:

nakeytrag

10.02.2023

Chemistry

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2.9 * 10^23 atoms Au

Explanation:

(95 g Au) * (1 mol Au/196.96657) * (6.02 * 10^23 atoms Au / 1 Mol Au)

2.9 * 10^23 atoms Au

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