The vessel contains 12 * 10 ^ 24 molecules of water vapor. What is the amount of a substance in a vessel?

Initial data: n (number of water vapor molecules in a vessel) = 12 * 10 ^ 24 molecules.

Reference values: Na (Avogadro’s number) = 6.02 * 10 ^ 23 mol-1.

The amount of water vapor substance in the vessel can be determined by the formula: ν = N / Na.

Let’s perform the calculation: ν = 12 * 10 ^ 24 / (6.02 * 10 ^ 23) ≈ 20 mol.

Answer: The amount of water vapor in the vessel is 20 mol.



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