Question

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

Answer 1

Answer:

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 = $\frac{mass}{molar mass}$

molar mass of Sn = 118.7g/mol

      number of moles =  $\frac{109}{118.7}$ = 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