The state's landlord-tenant laws protect people living in dwellings owned or leased by others. A person need not be listed on a formal lease to gain protection under these laws, but may gain protection by establishing residence in a place.
The mole is useful in chemistry because it is defined such that the mass of Avogadro's number of particles (atoms or molecules) of a substance (the molar mass) is equal to the sum of the numerical values of the atomic masses of its constituent elements.
The mass of one mole of a substance is sometimes referred to as the molar mass. The atomic/formula mass in grams = one mole of the defined substance. If your are dealing with individual atoms, one mole of equals the relative atomic mass in grams.This can be expressed as a simple formula ...ts a very important way of doing chemical calculations! The theoretical basis is explained in section (b). The mole is most simply expressed as the relative 'formula mass in g' or the 'molecular mass in g' of the defined chemical 'species', and that is how it is used in most chemical calculations.