Respuesta :

The number of F atoms in 1.506×1024 molecules of trifluoroacetic acid, C2HF3O2 is 4.515 × 10^24 atoms.

The formula of trifluoroacetic acid is C2HF3O2

The molar mass of the compound is; 2(12) + 1 + 3(19) + 2(16) = 114 g/mol

Number of moles of the compound is obtained by;

1 mole of the compound contains 6.02 × 10^23 molecules

x moles of the compound contains 1.506 × 10^24 molecules

x = 1.506 × 10^24 molecules × 1 mole /6.02 × 10^23 molecules

x = 2.5 moles of  trifluoroacetic acid.

Now;

Number of F atoms in the sample = 2.5 ×2 × NA

Where; NA = Avogadro's number

Number of F atoms in the sample = 2.5 × 3 × 6.02 × 10^23 atoms

= 4.515 × 10^24 atoms

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