Is this a saturated or unsaturated hydrocarbon? Why is that?
Question see heading. Figure 1a represents natural rubber. My guess: That's the position where the monomers are bonded together. At the C1 and C4 atoms of the neighboring molecules. And the cis has nothing to do with the numbers, right? Thanks in advance! Image source: Rubber – Encyclopedia of Chemistry (spektrum.de)
How are synthetic fibers made from petroleum?
Question is above – I need it for various white sheets and towels that have become stained.
Is that possible? Will it not rust?
Hey, we are supposed to improve a piece of work, but it hasn't been discussed…I don't understand the task or how to calculate it. Could someone explain it? Thanks in advance and have a nice evening.
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Potassium and sodium have a lonely electron in the outermost path and are therefore very reactive and occur in the form of salts and alkalis. This group of alkali metals also includes lithium and the rarer elements Rubidium, Caesium and Francium.
Magnesium and calcium have two electrons left and are called alkaline earth metals because their compounds are less soluble and therefore more earthy. These include beryllium, strontium, barium and radium.
these are all metals
https://www.abiweb.de/anorganic-chemistry/materials-and-substance properties/period system-of-elements-construction/metals-and-non-metals.html
https://de.wikipedia.org/wiki/Alkalimetalle
https://de.wikipedia.org/wiki/Erdalkalimetalle