Yurii V Geletii

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What is pH and and what pH-meter meausures.

These are super elementary questions. I asked these questions to several hundred people and received only three correct answers. Please, answer without consulting internet, books, or whatever...

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How many answers could post one person per day?

To answer the question posted in RG requires certain time depending on a question. Based on my own experience, it may take about 30 minutes to give a professional detail answer. I'm wondering,...

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