On the Molecular Weight of Yellow Blood Salt
Yellow blood salt, scientific name potassium ferrocyanide, is unique among chemical substances. Today's detailed study of its molecular weight is the basic content of chemical study.

Potassium ferrocyanide, its chemical formula is $K_ {4} [Fe (CN) _ {6}] $. To obtain its molecular weight, it is necessary to specify the atomic weight of each atom. The atomic weight of potassium ($K $) is about 39, the atomic weight of iron ($Fe $) is about 56, the atomic weight of carbon ($C $) is about 12, and the atomic weight of nitrogen ($N $) is about 14.

In $K_ {4} [Fe (CN) _ {6}] $, there are 4 potassium atoms, 1 iron atom, 6 carbon atoms, and 6 nitrogen atoms.

Calculated by molecular weight, that is, the sum of the product of the atomic weight of each atom and its atomic number. Then the molecular weight of potassium ferrocyanide is:

4 dollars\ times39 + 56 + 6\ times12 + 6\ times14 $
$= 156 + 56 + 72 + 84 $
$= 212 + 72 + 84 $
$= 284 + 84 $
$= 368 $

It can be seen that the molecular weight of potassium ferrocyanide (yellow blood salt) is 368. This value is crucial in many chemical applications, such as solution preparation, determination of stoichiometric relationships, etc. It is an indispensable parameter.