Respuesta :

Oseni

Answer:

4.72 × 10²⁴ molecules

Explanation:

Number of mols of a substance = mass of substance/molar mass of substance

Mass of carbon dioxide (CO2) = 345g

Molar Mass of Carbon = 12

Molar Mass of Oxygen = 16

Molar mass of CO2 = 12 + (16 x 2) = 44 g/mol

Number of mols of 345 grams of CO2 = 345/44 = 7.84 mols

Number of molecules of a substance = number of mols x Avogadro's constant.

                  = 7.84 mol  x 6.02 × 10²³ /mol

                   = 4.72 × 10²⁴

Hence, the number of molecules in 345 grams of carbon dioxide is 4.72 × 10²⁴ molecules.

mickymike92

Based on the data provided, there are 4.72 × 10^24 molecules in 345 g of CO2.

What is the number of molecules that are in 345 grams of carbon dioxide?

The number of molecules can be determined by using the formula below:

  • Number of molecules = no of moles × 6.02× 10^23
  • Number of moles = mass/molar mass

molar mass of CO2 = 44 g/mol

mass of CO2 = 345

Number of moles of CO2 = 345/44

Number of moles of CO2 = 7.84 moles

Then:

Number of molecules of CO2 = 7.84 × 6.02 × 10^23

Number of molecules = 4.72 × 10^24 molecules

Therefore, there are 4.72 × 10^24 molecules in 345 g of CO2.

Learn more about number of molecules at: https://brainly.com/question/920175

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