A sample of 96 g of ozone,O₃,contains the same number of atoms as A)96 g of oxygen (O₂). B)8.06 g of hydrogen (H₂). C)76 g of fluorine (F₂). D)54 g of aluminum (Al). E)117 g of nickel (Ni).

Question

Quizplus · Accepted Answer

Ozone has a molar mass of 48 g/mol and a formula of O3, which means it contains 3 oxygen atoms per molecule. 96 g of ozone would therefore contain:
(96 g)/(48 g/mol) = 2 mol of ozone
Since there are 3 atoms of oxygen in each molecule of ozone, this corresponds to:
2 mol x 3 atoms/mol = 6 atoms of oxygen
Similarly, 96 g of oxygen gas (O2) would contain:
(96 g)/(32 g/mol) = 3 mol of oxygen
And this corresponds to:
3 mol x 2 atoms/mol = 6 atoms of oxygen
Therefore, both samples contain the same number of oxygen atoms, so choice A is the best answer.

A Sample of 96 G of Ozone,O3,contains the Same Number

A Sample of 96 G of Ozone,O₃,contains the Same Number