At hydration reactions in alkadienes they are addition reactions, that is, the components (hydron...

tithesperiodic they are infinite and periodic numbers. Infinite, for they have no end, and period...

Substances are materials that have all properties well defined, determined and practically consta...

The Brazilian flag was deployed on November 19, 1889, the idea of ​​the current flag was develope...

One of the Brazilian artists who had the greatest projection abroad, Tom Jobim he was a conductor...

A spectrum haunts shopping malls – the spectrum of roll. With the parody of the opening sentence ...

We know that alleles are genes that occupy the same place (locus) in chromosomes counterparts. Th...

In the text "How do catalyst substances work?”, it has been shown that catalysts are able to incr...

The Franco-Prussian War of 1870-1871 was regarded as the first war in which modern combat methods...

When reversible reactions reach a point where the rate at which products form (direct reaction) a...

Modernity has brought an increase in risks, each day household appliances or electronics and thei...

Why are some papers darker than others? What prolongs the useful life of the material most used i...