When determining the density of a pure liquid or solution the temperature of the sample must be measured what is the density of a liquid sample depend on the temperature

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

"the periodic table is arranged in order of atomic number."