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How can knowing the formula weights of the elements help you balance the equation?
The molar mass is not needed to balance a chemical reaction.You need to know the chemical formulas of reactants, the possible formulas of products, valences of elements and ions, general principles of chemical reactions, some chemical and physical properties of substances involved in the reaction.
Is lead weights a mixture compound or element?
Lead weights are typically made of a mixture of lead metal and other elements such as antimony or tin to increase hardness. So, lead weights are considered a mixture of elements.
Who is Demitri Mendeleev and what did he do?
Dmitri Mendeleev was a Russian chemist who is best known for creating the periodic table of elements in 1869. He organized the known elements based on their atomic weights and properties, leaving gaps for undiscovered elements that were later confirmed. Mendeleev's work laid the foundation for our current understanding of the organization of the elements.
How did Mendeleev arrange the chemical elements in the periodic table?
Mendeleev arranged the elements by their relative atomic mass. Each one of his rows began with an element that had 1 valency and ended it with inert gas elements. The creator of the Periodic Table, Dimitri Mendeleev, arranged the elements by atomic number (amount of electrons) and amount of electron shells. This then lead to columns (groups) of elements with the same amount of electrons in their outer shell. So, now, every period contains elements with ascending atomic numbers. Every group contains elements with ascending amounts of electron shells.
What information did Mendeleev use to try to find a pattern in elements?
Mendeleev arranged elements based on their atomic weights and chemical properties. He noticed that when he arranged elements in order of increasing atomic weight, certain properties repeated at regular intervals, leading to the development of the periodic table.
Who was the first scientist to determine atomic weights for elements?
The first scientist to determine atomic weights for elements was John Dalton, an English chemist and physicist.
What is the sum of atomic mass?
I suppose that you think to atomic weights (not mass) of chemical elements and the molecular mass.
Who was the Russian chemist show a definite relationship between chemical properties and atomic weights of the elements?
Mendeleev
Who arrange the elements in the periodic table according to increase in atomic weights?
Dmitri Mendeleev is generally credited with the creation of the periodic table. http://en.wikipedia.org/wiki/Dmitri_Mendeleev
What is the mass of 4000 molecules of nitrogen?
Nitrogen is an element(atom), not a molecule. atomic weights are not a constant of nature and depend on the physical and chemical history of the elements. isotopes have different weights.
How did mendeleev arrange his version of the periodic table?
Mendeleev arranged his version of the Periodic Table in terms of ascending atomic weights and similar properties. Since it was first published in 1869, there have been updates and improvements.
How did Mendeleev know where to leave the spaces in his periodic table?
mandeleev didn't know spaces in the Periodic Table because he doesn't arrange it john Kepler arrange it most of mendeleev discoveries of elements are few most of other element where discover by other scientist after him in 19th century
Why it is necessary to introduce amu unit?
The atomic mass unit is necessary to evaluate the atomic weights of chemical elements (or atomic masses of isotopes).
What has the author G D Hinrichs written?
G. D. Hinrichs has written: 'The true atomic weights of the chemical elements and the unity of matter'
Which scientists work became the accepted explanation of atomic theory?
Modern Atomic Theory was developed by British scientist, John Dalton. His theory rested on four factors. Chemical elements are composed of atoms. Atoms in an element, are identical to the weight of the element. Atoms of different elements have different weights. To form compounds, atoms are combined in small, whole-number ratios.
How can knowing the formula weights of the elements help you balance the equation?
The molar mass is not needed to balance a chemical reaction.You need to know the chemical formulas of reactants, the possible formulas of products, valences of elements and ions, general principles of chemical reactions, some chemical and physical properties of substances involved in the reaction.
Does the periodic table gives the mass number of the most common isotopes of an element?
The periodic table give the atomic numbers and the atomic weights of chemical elements.
