How many moles are in 7.5x10^24 molecules of carbon dioxide? Grams?
To find the number of moles in a given number of molecules, you will need to use Avogadro's number, which states that there are 6.022 x 10^23 molecules in one mole of a substance.
First, let's find the number of moles in 7.5 x 10^24 molecules of carbon dioxide:
Number of moles = (Number of molecules) / (Avogadro's number)
Number of moles = (7.5 x 10^24) / (6.022 x 10^23)
Number of moles ≈ 12.45 moles
So, there are approximately 12.45 moles in 7.5 x 10^24 molecules of carbon dioxide.
Next, let's calculate the mass in grams. The molar mass of carbon dioxide (CO2) is 44.01 g/mol (carbon: 12.01 g/mol, oxygen: 16.00 g/mol x 2).
Mass (in grams) = Number of moles x Molar mass
Mass (in grams) = 12.45 moles x 44.01 g/mol
Mass (in grams) ≈ 547.04 grams
Therefore, there are approximately 12.45 moles and 547.04 grams in 7.5 x 10^24 molecules of carbon dioxide.
12.45 moles
Answers
1 mole => 6.02x10^23 molecules
X => 7.50x10^24 molecules