For the Focusâ first four model years, a 2.0-liter four-cylinder engine was offered and paired with a five-speed manual or a four-speed automatic transmission. Beginning in 2004, a 2.3-liter four-cylinder was also offered. In 2005, Ford refreshed the Focus shuffling trim and equipment offerings with it.
atomic mass - (chemistry) the mass of an atom of a chemical element expressed in atomic mass units. atomic weight, relative atomic mass. mass - the property of a body that causes it to have weight in a gravitational field. combining weight, eq, equivalent weight, equivalent - the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen.
Relative atomic mass, or atomic weight, is a dimensionless physical quantity. In its modern definition, it is the ratio of the average mass of atoms of an element to one unified atomic mass unit. The unified atomic mass unit, symbol u, is defined being 1â12 of the mass of a carbon-12 atom. Since both values in the ratio are expressed in the same unit, the resulting value is dimensionless; hence the value is relative. For one sample, its relative atomic mass is a straight average over the ...