Question

4. Отличаются ли понятия "моль молекул" и "моль атомов"? Объясните на приме молекулы аммиака NH.​

Answer 1

Difference between "mole of molecules" and "mole of atoms"

The concepts of "mole of molecules" and "mole of atoms" are related to the unit of measurement called the mole. A mole is a unit used in chemistry to represent a specific number of particles, such as atoms, molecules, or ions. It is defined as the amount of a substance that contains as many particles as there are atoms in exactly 12 grams of carbon-12.

The main difference between a "mole of molecules" and a "mole of atoms" lies in the type of particles being counted.

- A "mole of molecules" refers to the number of molecules present in a given sample. A molecule is a group of two or more atoms chemically bonded together. For example, in the case of ammonia (NH3), a mole of molecules of ammonia would represent Avogadro's number (approximately 6.022 x 10^23) of NH3 molecules.

- On the other hand, a "mole of atoms" refers to the number of individual atoms present in a given sample. An atom is the smallest unit of a chemical element that retains the chemical properties of that element. In the case of ammonia (NH3), a mole of atoms would represent Avogadro's number of individual nitrogen (N) and hydrogen (H) atoms.

In summary, the distinction between a "mole of molecules" and a "mole of atoms" lies in whether the count is based on individual atoms or complete molecules.

Example of ammonia (NH3) molecules

To illustrate the concept, let's consider the example of ammonia (NH3) molecules.

Ammonia is a compound composed of one nitrogen atom (N) and three hydrogen atoms (H). Each ammonia molecule consists of these four atoms bonded together.

If we have one mole of ammonia molecules, it means we have Avogadro's number (approximately 6.022 x 10^23) of NH3 molecules. This would correspond to one mole of nitrogen atoms and three moles of hydrogen atoms, as each NH3 molecule contains one nitrogen atom and three hydrogen atoms.

Please note that the actual search results did not provide specific information about the example of ammonia (NH3) molecules. However, the information provided is based on general knowledge of chemistry and the concept of moles.