calculate mass of8.22*10^23atoms of rubidium

Answer 1

The molar mass of rubidium (Rb) is approximately 85.47 g/mol.

We can use this to calculate the mass of one mole of Rb atoms:

1 mol of Rb atoms = 85.47 g

Now, we want to calculate the mass of 8.22*10^23 Rb atoms, which is equivalent to:

(8.22*10^23 atoms) x (1 mol/6.022*10^23 atoms) x (85.47 g/mol)

Simplifying this expression, we get:

= (8.22*85.47)/6.022

= 116.2 g

Therefore, the mass of 8.22*10^23 atoms of rubidium is approximately 116.2 g.