How many grams of cs in a sample of cs that contains the same number of moles as a 109 gram sample of sn

122.04g

Explanation:

Cs is Caesium

Mass of Sn, tin = 109g.

Solution

we must first find the number of moles of the Sn from the given mass:

       number of moles =

molar mass of Sn = 118.7g/mol

      number of moles =   = 0.918moles

Now since the number of moles of the Sn is the sameas that of Cs, we can find the mass of Cs that will equal that.

Mass of Cs = number of moles x molar mass of Cs = 0.918 x 132.9 = 122.04g

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.