Question

ОБЧИСЛИТИ КІЛЬКІСТЬ МОЛЕКУЛ ТА АТОМІВ, ЩО МІСТИТЬСЯ В 89,6 Л КИСНЮ ПРИ НОРМАЛЬНИХ УМОВАХ.​

Answer 1

Ответ:

Дано:

V(O2)=89,6 л  N= NA∙V/22,4

                              Nмол.(О2)=6,02 моль-1·89,6л/22,4 л/моль=24,08·1023

Nмол.-?, Nатомів-? Nатомів(О)=2· Nмол.(О2)=2·24,08·1023=48,16·1023

                             Відповідь:  24,08·1023 молекул; 48,16·1023 атомів.

Объяснение:

Answer 2

Calculation of the Number of Molecules and Atoms in 89.6 L of Oxygen at Normal Conditions

To calculate the number of molecules and atoms in 89.6 L of oxygen at normal conditions, we need to use the ideal gas law and Avogadro's number.

Avogadro's number is a fundamental constant in chemistry and is equal to approximately 6.022 x 10^23. It represents the number of atoms, molecules, or ions in one mole of a substance.

The ideal gas law equation is given by:

PV = nRT

Where: - P is the pressure of the gas (at normal conditions, it is approximately 1 atmosphere) - V is the volume of the gas (given as 89.6 L) - n is the number of moles of the gas (what we want to calculate) - R is the ideal gas constant (approximately 0.0821 L·atm/(mol·K)) - T is the temperature of the gas (at normal conditions, it is approximately 273.15 K)

To calculate the number of moles, we rearrange the ideal gas law equation as follows:

n = PV / RT

Substituting the given values:

n = (1 atm) * (89.6 L) / (0.0821 L·atm/(mol·K) * 273.15 K)

Simplifying the equation:

n = 1.036 mol

Now that we have the number of moles, we can calculate the number of molecules and atoms using Avogadro's number.

Since 1 mole of any substance contains approximately 6.022 x 10^23 particles, the number of molecules and atoms in 1.036 moles of oxygen is:

Number of molecules = (1.036 mol) * (6.022 x 10^23 molecules/mol)

Number of atoms = (1.036 mol) * (6.022 x 10^23 atoms/mol)

Calculating the values:

Number of molecules = 6.235 x 10^23 molecules

Number of atoms = 6.235 x 10^23 atoms

Therefore, in 89.6 L of oxygen at normal conditions, there are approximately 6.235 x 10^23 molecules and 6.235 x 10^23 atoms.