Answer :

Answer:

There are approximately 0.232 moles of acetic acid in 1.40 x 10^23 molecules.

Explanation:

We can find the number of moles of acetic acid using Avogadro's constant, which is the number of particles (atoms or molecules) in one mole of a substance. Avogadro's constant is approximately 6.022 x 10^23 molecules/mole.

Here's how to calculate the number of moles:

Define the variables:

Number of acetic acid molecules (given): 1.40 x 10^23

Avogadro's constant: 6.022 x 10^23 molecules/mole (represented by Avogadro's constant symbol)

Formula:

Number of moles (moles) = Number of molecules (molecules) / Avogadro's constant (molecules/mole)

Calculation:

moles = (1.40 x 10^23 molecules) / (6.022 x 10^23 molecules/mole)

Simplifying (round to 3 significant digits):

moles ≈ 0.232 moles

Therefore, there are approximately 0.232 moles of acetic acid in 1.40 x 10^23 molecules.