100 Chemical Myths: Misconceptions, Misunderstandings, - download pdf or read online

By Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda

ISBN-10: 3319084186

ISBN-13: 9783319084183

ISBN-10: 3319084194

ISBN-13: 9783319084190

100 Chemical Myths offers with renowned but mostly unfaithful misconceptions and misunderstandings regarding chemistry. It comprises lucid and concise factors reduce via fallacies and concrete legends which are universally proper to an international viewers. quite a lot of chemical myths are explored in those components; nutrients, medications, catastrophes, chemical compounds, and environmental difficulties. Connections to pop culture, literature, video clips, and cultural historical past carry the reader’s curiosity while key recommendations are fantastically annotated with illustrations to facilitate the certainty of strange fabric. Chemical Myths Demystified is pitched to members with out a formal chemistry heritage to fledgling undergraduate chemists to pro researchers and beyond.

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Additional resources for 100 Chemical Myths: Misconceptions, Misunderstandings, Explanations

Sample text

Today’s human bones contain about double the amount of lead that was measured in Stone Age skeletons, yet today’s values are several times lower than it was in the bones of people who lived in the last two millennia. The health effects of lead remained unknown for a surprisingly long time in human history. The daily average lead intake is about 1 mg, but only about 10 % of this reaches to the blood stream. 025 ppm of lead compounds. Drinks are primarily responsible for most of the human lead exposure: old lead pipes, lead containing paint on mugs, and wine or whisky stored in leaded glass, are the main sources.

In the developed world, re-processing of lead batteries is among the most successful recycling technologies: 97 % of spent batteries were re-cycled in the US between 1997 and 2001. The second most common use of lead is still glass making, but not for tableware. A traditional (not liquid crystalbased) computer monitor or television contains about a quarter of a kilogram of lead, and its primary function today is protecting humans from X-rays produced during the operation of these devices. Protection from radiation is also important in the nuclear industry.

In biotechnology, aqueous biochemical reactions are typically applied, although the product might not dissolve very well in water and the microorganisms may not tolerate high concentrations. Thus, large amounts of water are necessary. ). Similarly, to produce 1 kg of midsized proteins using genetically modified Escherichia coli bacteria, 15,000 kg of water, 400 kg of inorganic salts, 100 kg of organic solvents (most of which qualify as hazardous waste) and 20 kg of consumable are required. Of the mentioned waste materials, the largest problem is posed by the dilute aqueous solutions containing inorganic salts.

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100 Chemical Myths: Misconceptions, Misunderstandings, Explanations by Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda

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