It can happen that there are acids of the same element, and this element has the same oxidation n...

O Lithium is a chemical symbol element read, atomic number 3 and atomic mass 7 u, has in its stru...

Lanolin is made up of several compounds, including esters and polyesters of long-chain alcohols a...

When talking about bacteria we usually remember diseases, as some of these organisms are capable ...

Hybridization of sp-type carbon2 it occurs when it has a double bond and two single bonds or a pi...

What is roundel?Redundilha is the poetic resource that establishes verses of five or seven poetic...

Like many other words in English, “tell” (say / speak) and “say” (say / speak) are just two more ...

The word crib refers to the place where the cattle are placed when collected, in other words, it ...

Le Chatelier's principle: when a force is applied to a system in equilibrium, it tends to readjus...

The application of the Rio de Janeiro as the host city of 2016 Olympic Games was made official in...

Rene Descartes was an important philosopher and mathematician, in addition to having made signifi...

The most developed countries reached a very high level of growth, mainly the USA, Japan and some ...