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Video Transcription

Okay, dilution.

The aim of dilution is to show how to calculate the concentration of a solution made by diluting

a stock solution.

To save time and add space in the laboratory, solutions that are routinely used are often

purchased or prepared in concentrated form called stock solutions.

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dirty585 3 月 前
geil wie sich tina ihr arschloch ficken lässt…..
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Fritz_86
Fritz_86 1 年 前
Tina Tosh
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