Question

Сколько различных видов молекул воды существует в природе, если кислород образует изотопы 16О,17О,18О?

Answer 1

Н2(16О)
Н2(17О)
Н2(18О) Всего три вида молекул
!!!!!!! 16,17,18 - верхние индексы перед О.

Answer 2

Number of Water Molecule Variants in Nature

The number of different types of water molecules in nature can be determined by considering the isotopic variations of hydrogen and oxygen atoms in the water molecule.

Isotopes of Oxygen Oxygen has three stable isotopes: 16O, 17O, and 18O.

The different combinations of these isotopes in water molecules result in several variants.

The most common form of water is H2O, where the oxygen atom is the 16O isotope. However, there are other combinations of isotopes that lead to different variants of water molecules.

The exact number of different variants can be calculated by considering the possible combinations of these isotopes in the water molecule.

The number of different variants of water molecules due to the isotopic variations of oxygen can be calculated using the principles of combinatorics.

Combinatorics Calculation The number of different water molecule variants can be calculated using the formula: \[ \frac{n!}{(n-r)!r!} \] where: - n is the total number of items (in this case, the number of isotopes) - r is the number of items to choose

By substituting the values for the isotopes of oxygen (16O, 17O, 18O) into the formula, we can calculate the number of different variants of water molecules.

Let's proceed with the calculation using the provided isotopes and the combinatorics formula.

\[ \frac{3!}{(3-2)!2!} = \frac{3 \times 2 \times 1}{1 \times 2} = 3 \]

Conclusion There are three different variants of water molecules in nature due to the isotopic variations of oxygen, specifically the 16O, 17O, and 18O isotopes.

This calculation considers the different combinations of oxygen isotopes in water molecules, leading to the determination of the number of distinct variants.