This number--called a mole--is a basic measuring unit in chemistry. Mole Day typically falls during National Chemistry Week. Students develop a new method of counting objects, called the PCU, and ...

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12.

The angstrom is an extremely small unit, roughly the size of an atom. It is commonly used in fields such as nanotechnology, crystallography, and spectroscopy to measure atomic and molecular structures ...

MOL Group has reached a milestone toward producing ... The experiment demonstrated that the production unit at the Bratislava Refinery, used for manufacturing standard aviation kerosene, is ...

Calculate the amount of sodium hydroxide, NaOH, in 25.0 cm 3 of solution of concentration 0.1 mol/dm 3. If the amount in mol of a solute in a given volume of solution is known, its mass can also ...