To determine the number of moles of Fe that can be made from 25 moles of Fe2O3, you need to write the balanced chemical equation for producing O2 from Fe2O3.
2Fe2O3 = 4Fe + 3O2, which means that 2 moles of Fe2O3 will produce 4 moles of Fe and 3 moles of O2 .
Set up a proportion.
3 moles of O2 ÷ 2 moles of Fe2O3 = x moles of O2 ÷ 25 moles of Fe2O3
Cross multiply and divide.
3 moles of O2 * 25 moles of Fe2O3 ÷ 2 moles of Fe2O3 = 37.5 moles of O2 produced.
Balanced equation first. ( looks like iron III )
4Fe + 3O2 -> 2Fe2O3
I will assume iron limits
5 moles Fe (2 moles Fe2O3/4 moles Fe)
= 2.5 moles Fe3O3 made
7.5 moles.
There are 3 x 2.5 = 7.5 moles Fe in 2.5mole Fe3O4
25 grams Fe2O3 (1 mole Fe2O3/159.7 grams)
= 0.16 moles iron (III) oxide ( Ferric oxide )
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0.25 moles iron (6.022 X 1023/1 mole Fe)
= 1.5 X 1023 atoms of iron
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Fe, or iron, has a molar mass of 55.845 grams per mole. This means that 0.2 moles is equal to 11.2 grams of iron.
1,495
One mole of any mono-atomic element contains (by definition) 6.022*10+23 atoms. please calculate from there by multiplying - 11,14.1023 atoms.
There are 6 atoms of oxygen represented by this.
The conversion factor you need for this problem is Avogadro's number.(6.02 x 1023 atoms iron/1 mole iron) = 1... OR ...(1 mole iron/6.02 x 1023 atoms iron) = 1Since you want to end up in units of atoms of Fe, this goes in the numerator (on top). You want to convert from moles Fe, so this goes in the denominator (on the bottom).moles Fe6.02E+23 atoms Fe = atoms Fe1 mole Fe
4,80 moles of Fe contain 28,9062761136.10e23 atoms.
4,80 moles of Fe contain 28,9062761136.10e23 atoms.
1 mole of atoms of any element is 6.022 x 1023 atoms. 1 mole of Fe = 6.022 x 1023 atoms Fe 5.98 x 1024 atoms Fe x (1mol Fe/6.022x1023 atoms Fe) = 9.93 moles Fe
Known/Given:1 mole of Fe = 55.845g Fe (its atomic weight in grams)1 mole of Fe = 6.022 x 1023 atoms Fe (from Avogadro's number)Convert grams Fe to moles Fe.600.0g Fe x 1mol Fe/55.845g Fe = 10.74mol FeConvert moles Fe to atoms Fe.10.74mol Fe x 6.022 x 1023atoms Fe/1mol Fe = 6.468 x 1024atoms Fe
1 mole Fe = 6.022 x 1023 atoms Fe1 mole Fe = 55.845g Fe (atomic weight in grams)Convert grams Fe to moles Fe.400g Fe x (1mol Fe/55.845g Fe) = 7.16mol FeConvert moles Fe to atoms Fe.7.16mol Fe x (6.022 x 1023atoms Fe/1mol Fe) = 4.31 x 1024 atoms Fe
To find the number of atoms we need to find number of moles of Fe in 312.0 grams. Molar weight of Fe = 56 Number of moles of Fe in 312 grams = 312/56 =5.571 moles. 1 mole of Fe has Avogadro number of atoms. So 5.571 moles of Fe has atoms = 5.571 * Avogadro number. Avogadro number = 6.022 * 10^23 So total atoms = 5.571 * 6.022 * 10^23 = 33.548 * 10^23 * means multiply, ^ means raised to power.
A mole is 6.022×1023 of anything, including atoms. So to determine the number of atoms are in 30 moles of iron, you multiply the number of moles times 6.022×1023. 30mol Fe x 6.022×1023 atoms Fe/1mol Fe = 1.8066×1025atoms Fe When corrected for significant figures, the answer is 2×1025atoms Fe. Note: the number following the 10 in the large numbers is the exponent on the 10 and should be written as superscripts, but that is not supported at the moment.
1 mole F atoms = 6.022 x 1023 F atoms 1.01 x 1023 F atoms x (1mol F atoms/6.022 x 1023 Fe atoms) = 0.168mol Fe
Fe, or iron, has a molar mass of 55.845 grams per mole. This means that 0.2 moles is equal to 11.2 grams of iron.
1,495
Approx 3.997 moles.
55.8 moles