Question

Find the mole fraction of 5% CaO

Answer 1

Explanation:

Mole fraction of CA in CaO

Moler mass of CaO = 40+16 =56

Mole fraction = 40/ 56

Now Moles of CaO in 0.041 g=0.041 / 56 =0.000 732

Total atoms are present in given mole = 0.000732×6.02 × 10

Atoms of Ca =40 /56 ×0.000732 ×6.023 ×10

=0.714 ×7.32 ×6.023×10

=3.14×10