"Good heavens, another AC exam? Wasn't there one half a year ago? 😱" Yes, but this time it's the internship exam, because oral discussions after the internship have become too time-consuming and therefore the AC practical is now also being tested with a written exam. The following question was asked "How should you dispose of…
I am training to be a CTA and we work with chemicals that are more or less dangerous/toxic. Now, I've inhaled toluene vapors several times. This is because our lab teacher tells us to simply rinse off any small residues of the substance that cling to test tubes and beakers in the sink. But every…
The solution to this problem is 14.9 J/k.mol
Hello, I have an air quality meter and the total VOC value is given as intensity on a scale of 1 to 100. Many sources cite VOC limit values ​​as ppb (parts per billion) units. How do I convert the total VOC value to ppb?
Why isn't it available anymore, or what was it used for? Are there other chemicals that used to be freely available but aren't so easy to get today? And what about benzene, oxygen, and hydrogen or nitrogen?