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.
Atomic mass is a calculation of the mass of an element, when taking into account the varying mass number of its isotopes. Although each isotope shares the same number of protons and electrons, they have varying numbers of neutrons. You must also factor in the overall abundance of the isotope and solve for a weighted average. You can learn how to find average atomic mass by following these calculations.