Calculate the number of moles Fe2O3 in 2.37x10^21 atoms of Fe2O3?
Well, to calculate the number of moles of Fe2O3, we need to use Avogadro's number, which is approximately 6.022 x 10^23.
Given that you have 2.37 x 10^21 atoms of Fe2O3, we can create a proportion:
(2.37 x 10^21 atoms) / (6.022 x 10^23 atoms per mole) = x / 1 mole
Now, let's solve for x, the number of moles:
x ≈ (2.37 x 10^21 / 6.022 x 10^23) ≈ 0.039 moles
So, there are approximately 0.039 moles of Fe2O3 in 2.37 x 10^21 atoms of Fe2O3. That's a lot, but don't worry, it won't take up too much space in your chemistry lab.
To calculate the number of moles (n) of Fe2O3, we can use Avogadro's number (6.022 x 10^23) to convert from atoms to moles.
Given:
Number of atoms of Fe2O3 = 2.37 x 10^21
Step 1: Determine the molar mass of Fe2O3.
The molar mass of Fe2O3 can be calculated by adding the atomic masses of iron (Fe) and oxygen (O).
Fe: atomic mass = 55.845 g/mol
O: atomic mass = 15.999 g/mol (x3 because there are three oxygen atoms in Fe2O3)
Molar mass of Fe2O3 = (2 x 55.845 g/mol) + (3 x 15.999 g/mol) = 159.69 g/mol
Step 2: Convert the number of atoms to moles.
Using Avogadro's number, we can calculate the number of moles (n) from the number of atoms (N).
n = N / Avogadro's number
n = (2.37 x 10^21 atoms) / (6.022 x 10^23 atoms/mol)
n ≈ 0.00394 mol
Therefore, there are approximately 0.00394 moles of Fe2O3 in 2.37 x 10^21 atoms of Fe2O3.
To calculate the number of moles of Fe2O3 in 2.37x10^21 atoms of Fe2O3, you need to use Avogadro's number, which is 6.022x10^23 atoms/mole. The equation to calculate moles is:
Moles = Number of Atoms / Avogadro's Number
Now, let's calculate the number of moles of Fe2O3:
Number of moles = 2.37x10^21 atoms / 6.022x10^23 atoms/mole
Dividing 2.37x10^21 by 6.022x10^23 gives:
Number of moles ≈ 3.94x10^-3 moles
Therefore, there are approximately 3.94x10^-3 moles of Fe2O3 in 2.37x10^21 atoms of Fe2O3.