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 molar mass is also an important conversion factor to convert moles to grams. To do this, we multiply the number of moles of the substance to the molar mass. This conversion factor is important when quantifying the weight in grams in scientific experiments. To unlock this lesson you must be a Study.com Member.