On the molecular weight of diethyl malonate
diethyl malonate, which is an important compound in the field of organic chemistry. To understand its properties and reactions, its molecular weight needs to be known first.

The chemical formula of diethyl malonate is $C_7H_ {12} O_4 $. To determine its molecular weight, it is necessary to calculate the relative atomic mass of each atom. The relative atomic mass of carbon ($C $) is about 12, hydrogen ($H $) is about 1, and oxygen ($O $) is about 16.

In $C_7H_ {12} O_4 $, containing 7 carbon atoms, the sum of their relative atomic masses is 7 dollars × 12 = 84 $; containing 12 hydrogen atoms, the sum of their relative atomic masses is 12 dollars × 1 = 12 $; containing 4 oxygen atoms, the sum of their relative atomic masses is 4 dollars × 16 = 64 $.

Therefore, the molecular weight of diethyl malonate is 84 dollars + 12 + 64 = 160 $. This molecular weight value is crucial for the study of various reactions involving diethyl malonate, such as esterification reactions and substitution reactions. Due to its relationship with the measurement of reactions, the conversion of moles of substances, and many other aspects, it is an indispensable parameter for the research and practical application of organic chemistry.