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The minimum mass of a particular fissionable nuclide in a given volume required to sustain a nuclear chain reaction.

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Line Spectrum

An atomic emission or absorption spectrum.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.

Structural Isomers

Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.

Hydrogen-Oxygen Fuel Cell

Fuel cell in which hydrogen is the fuel (reducing agent) and oxygen is the oxidizing agent.

 

Hydration Energy

The energy change accompanying the hydration of a mole of gase and ions.

Saccharate

A compound formed by interaction of sucrose with a metallic oxide, usually lime, and useful in the purification of sugar.

 

Molecular Equation

Equation for a chemical reaction in which all formulas are written as if all substances existed as molecules, only complete formulas are used.

Diamonds Are Forever

Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?

Neutron

A neutral subatomic particle having a mass of 1.0087 amu.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.