Answer: Juan Gris, whose real name was José Victoriano González-Pérez, was a Spanish painter famous for painting in the Cubist style as well as producing some sculptures. His works are highly praised by art critics as being some of the finest examples of Cubist painting.
Explanation: José Victoriano González-Pérez, better known as Juan Gris, was a Spanish painter born in Madrid who lived and worked in France most of his life. Closely connected to the innovative artistic genre Cubism, his works are among the movement's most distinctive.
Answer:
The standard atomic weight is the average mass of an element in atomic mass units. Though individual atoms always have an integer number of atomic mass units, the atomic mass on the periodic table is stated as a decimal number because it is an average of the various isotopes of an element.
1900's is when they increased most
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