Answer:
Among Na ,K , Pb , Li , The atom which does not react with water is :
<u>Pb</u>
Explanation:
Li : Reacts slowly with water
Na ,K : Reacts vigorously with water
Pb : It does not reacts with water because :- Pb oxidize in presence of atmospheric oxygen to form lead oxide (PbO) . this PbO form a layer over the surface of Pb and make it inert to water.
Answer:
Explanation:
Hello,
In this case, for the calculation of the standard entropy of liquid lead at 500 °C (773.15 K), starting by solid lead 298.15 K we need to consider three processes:
1. Heating of solid lead at 298.15 K to 600.55 K (melting point).
2. Melting of solid lead to liquid lead.
3. Heating of liquid lead at 600.55 K (melting point) to 773.15 K.
Which can be written in terms of entropy by:
Whereas each entropy is computed as follows:
Therefore, the standard entropy of liquid lead at 500 °C turns out:
Best regards.
Pyridoxine contains 11 hydrogen atoms, 8 carbon atoms, 3 oxygen atoms, and 1 nitrogen atom. The chemical formula would be C8H11NO3. A chemical formula of a substance tells the number of atoms of the elements that is involved in the compound. Pyrodoxine is commonly known as vitamin B6. It is mostly found in food like meat, whole grains, nuts and avocados. Also, it is can be present in dietary supplements. It has a number of important functions in the body. Dietary supplements are manufactured to prevent vitamin B6 deficiency. Also, it is used in treating a specific type of anemia or the lack of red blood cells.
The subatomic particle that gives off visible light is electrons
Answer:
A mixture is a combination of two or more substances in which the identities of substances are retained.
Explanation:
sorry if i'm wrong
