Answer :
There are approximately 4.85 x 10²³ molecules in 35.5 grams of carbon dioxide.
To determine the number of molecules in 35.5 grams of carbon dioxide (CO₂), we need to use the concept of molar mass and Avogadro's number.
Calculate the molar mass of carbon dioxide (CO₂):
Carbon (C) has a molar mass of approximately 12.01 g/mol, and oxygen (O) has a molar mass of approximately 16.00 g/mol. Since carbon dioxide has two oxygen atoms, we add the molar masses together:
Molar mass of CO₂ = 12.01 g/mol (carbon) + 2 * 16.00 g/mol (oxygen) ≈ 44.01 g/mol
Determine the number of moles of CO₂ in 35.5 grams:
Number of moles = Mass of substance / Molar mass
Number of moles of CO₂ = 35.5 g / 44.01 g/mol ≈ 0.806 mol
Use Avogadro's number to find the number of molecules:
Avogadro's number (NA) is approximately 6.022 x 10²³ molecules/mol.
Number of molecules = Number of moles × Avogadro's number
Number of molecules of CO₂ ≈ 0.806 mol × 6.022 x 10²³ molecules/mol ≈ 4.85 x 10²³ molecules
So, there are approximately 4.85 x 10²³ molecules in 35.5 grams of carbon dioxide.
Learn more about carbon dioxide from the link given below.
https://brainly.com/question/3049557
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Answer:
you have to use the avogadro's constant of 6.023×10^23 to calculate the number of molecules of carbon dioxide.and you also have to use the molecular mass which is 44.
35.5/44×6.023×10^23
=4.85×10^23
I hope this helps and sorry if it's wrong
