Question

Calculate the number of CO2 molecules (Nco₂) in 0.0647 mol of CO2.

Express your answer using three significant figures.

Answer 1

To calculate the number of CO2 molecules in 0.0647 mol of CO2, you need to use Avogadro's number and convert the given moles to molecules.

Step-by-step explanation:

To calculate the number of CO2 molecules (NCO₂) in 0.0647 mol of CO2, we need to use Avogadro's number, which states that there are approximately 6.022 × 1023 molecules in one mole of a substance. First, we convert 0.0647 mol to molecules by multiplying it by Avogadro's number:

NCO₂ = 0.0647 mol × 6.022 × 1023 molecules/mol = 3.903 × 1022 molecules

Therefore, there are approximately 3.903 × 1022 CO2 molecules in 0.0647 mol of CO2.

Learn more about Calculating number of molecules in a given amount of substance