How many acetone molecules are in a bottle of acetone with a volume of 445 ml ? (density of acetone = 0.788 g/cm3).

The answer is:

First, we need to calculate the molecular weight of the acetone (CH3COCH3)

So,

Then,

Second, we need to calculate the mass of the acetone in the bottle

We need to remember that

So,

Third, we need to calculate the number of moles:

Fourth, we need to calculate the number of atoms:

Remember,

Therefore,

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