If my understanding is correct, what this saying is referring to is the conversion of energy from relatively useful forms to heat energy (which is relatively useless).
As you probably know, conservation of matter says that matter can be neither created nor destroyed. You may also be aware of the conservation of energy, which states that energy can be neither created nor destroyed, but only converted from one form to another. Whenever you have a chemical process, a complicated process called entropy is what drives the process (you don't need to know exactly what this is, but if you want to, you can look up the second law of thermodynamics). Part of that process often involves energy being converted to different forms--from useful forms (that can do work) to useless forms (that can't do work). Useful forms of energy are "useful" because they can do work, and in the process are converted to heat, which is not very useful for work, and generally cannot be converted back to useful forms. Matter, on the other hand, does not have "useful" and "useless" forms.
Mass of Lithium = 1443.73 g ≈ 1.4 kg
<h3>Further explanation </h3>
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
The number of atoms of Li = N=1.25 x 10²⁶
mol Li(n) :
mass Li (Ar=6.941 g/mol)
Answer is: the total number of electrons shared between the atoms is four.
Molecule of oxygen is nonpolar because double linear bonds (O=O).
Oxygen (O) is an element with atomic number 8, it means it has eight protons and eight electrons, so atom has neutral charge. Oxygen is a nonmetal.
Electron configuration of oxygen atom: ₈O 1s² 2s² 2p⁴.
Oxygen atom has six valence electrons, so it is in 16 group of Periodic table of elements.
Two valence electrons from both oxygen atoms form double bond (O::O) at oxygen molecule.
Answer:
The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions. ... According to Dalton, atoms of different elements combine in simple whole number ratios to form compounds.
It is considered a compound. h2o is 2 hydrogen's and 1 oxygen, it is also known as Dihydrogen monxid