A catalyst that exists in the same phase (solid, liquid or gas) as the reactants. The process is called Homogeneous Catalysis.
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Interesting facts about metals
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Features of the Scanning Tunneling Microscope
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Chemistry can teach us about the composition of celestial bodies and determine their age.
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Harmful Chemicals Found In Food
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Compressed Gas
A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)
Nitrogenases
A class of enzymes found in bacteria within root nodules in some plants, which catalyze reactions by which N2 molecules from the air are converted to ammonia.
Positron
A Nuclear particle with the mass of an electron but opposite charge.
Nuclide Symbol
Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.
Nonelectrolyte
A substance whose aqueous solutions do not conduct electricity.
Pairing Energy
Energy required to pair two electrons in the same orbital.
Heat of Solution
The amount of heat absorbed in the formation of solution that contains one mole of solute, the value is positive if heat is absorbed (endothermic) and negative if heat is released (exothermic).
Mass Action Expression
For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.
Chemistry of the sky
Chemistry can teach us about the composition of celestial bodies and determine their age.
Colloid
A heterogeneous mixture in which solute-like particles do not settle out.
