1.

Find the number of molecules and number of atoms in 5 mole O2 molecules

Answer»

No. of MOLECULES in 5 moles O2 molecules = 5 moles = 3.011 x 10^24 molecules

1 mole = 6.022 x 10^23
5 moles = 30.11 x 10^23 = 3.011 x 10^24


1 O2 molecule = 2 O ATOMS

3.011 x 10^24 O2 molecules

= 2 x 3.011 x 10^24 atoms
= 6.022 x 10^24



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