The product of pressure and the volume of an ideal gas is directly proportional to the number of moles of the gas and the absolute temperature.
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Why do copper products change color, and what is the name of the process?
Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.
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Varieties of garnet minerals
The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...
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The most expensive metal in the world
Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.
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Ozone
We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.
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Creating Malachite egg
One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...
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yttria
Y2O3: A white, water-insoluble powder, Y2O3, used chiefly in incandescent gas and acetylene mantles.
Substance
Any kind of matter all specimens of which have the same chemical composition and physical properties.
Open Sextet
Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).
Chemistry of the sky
Chemistry can teach us about the composition of celestial bodies and determine their age.
Henry's Law
The pressure of the gas above a solution is proportional to the concentration of the gas in the solution.
Effective Nuclear Charge
The nuclear charge experienced by the outermost electrons of an atom, the actual nuclear charge minus the effects of shielding due to inner-shell electrons.
Example: Set of dx2-y2 and dz2 orbitals, those d orbitals within a set with lobes directed along the x-, y-, and z-axes.
Amine
Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.
Dilution
Process of reducing the concentration of a solute in solution, usually simply by mixing with more solvent.
Kinetic-molecular Theory
A theory, that attempts to explain macroscopic observations on gases in microscopic observations on gases in microscopic observations on gases in microscopic or molecular terms.
Compound
A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.
