Question

Скільки молекул міститься в 0,5 кг CO2?

Answer 1

Ответ:

см фото

Объяснение:

Answer 2

Calculating the Number of Molecules in 0.5 kg of CO2

To calculate the number of molecules in 0.5 kg of CO2, we can use the following steps:

1. Determine the Molar Mass of CO2: - The molar mass of CO2 (carbon dioxide) is approximately 44.01 grams per mole (g/mol).

2. Convert 0.5 kg to Grams: - 1 kilogram (kg) is equal to 1000 grams (g).

3. Calculate the Number of Moles of CO2: - Use the molar mass of CO2 to convert the mass of CO2 from grams to moles.

4. Use Avogadro's Number to Find the Number of Molecules: - Avogadro's number is approximately 6.022 x 10^23 molecules per mole.

Calculation Steps

1. Determine the Molar Mass of CO2: - The molar mass of CO2 is approximately 44.01 g/mol.

2. Convert 0.5 kg to Grams: - 0.5 kg = 500 grams.

3. Calculate the Number of Moles of CO2: - Number of moles = Mass (in grams) / Molar mass - Number of moles = 500 g / 44.01 g/mol ≈ 11.36 moles

4. Use Avogadro's Number to Find the Number of Molecules: - Number of molecules = Number of moles * Avogadro's number - Number of molecules ≈ 11.36 moles * 6.022 x 10^23 molecules/mole - Number of molecules ≈ 6.84 x 10^24 molecules

Therefore, there are approximately 6.84 x 10^24 molecules in 0.5 kg of CO2.