Question

How many atoms of O are in a 0.150 mole of aspirin, C9H8O4

Answer 1

Here, 1 molecule of aspirin contains 4 atoms of O.

=> 1 mole of aspirin contains 4 moles of O.

=>0.15 moles of aspirin contains 0.6 moles of O.

Ans-0.6

Answer 2

Concept:

1 mole of an atom contains a 6.022×10²³ number of atoms.

Given:

Moles of the aspirin are 0.150 moles.

Find:

The number of atoms of Oxygen is in 0.150 moles of aspirin.

Solution:

The chemical formula of Aspirin is C₉H₈O₄, which contains 9 carbons, 8 hydrogens, and 4 oxygens.

Total Moles of oxygen atoms in the Aspirin,

m =0.150 × 4 mol = 0.60 mol

1 mole of oxygen atoms contains 6.022×10²³ atoms of oxygen.

So, 0.60 mol will contain,

N = 0.60×6.022×10²³ = 3.61 × 10²³ atoms

Hence, there is a total of 3.61 × 10²³ atoms are present in the 0.150 moles of the Aspirin, C₉H₈O₄.

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