Как найти молекулярную массу fe2o3

• Относительная молекулярная масса Fe2O3: 159.6882
• Молярная масса Fe2O3: 159.6882 г/моль (0.15969 кг/моль)

Расчёт молярной и относительной молекулярной массы Fe2O3

• Mr[Fe2O3] = Ar[Fe] * 2 + Ar[O] * 3 = 55.845 * 2 + 15.9994 * 3 = 159.6882
• Молярная масса (в кг/моль) = Mr[Fe2O3] : 1000 = 159.6882 : 1000 = 0.15969 кг/моль

Расчёт массовых долей элементов в Fe2O3

• Массовая доля железа (Fe) = 111.69 : 159.6882 * 100 = 69.943 %
• Массовая доля кислорода (O) = 47.9982 : 159.6882 * 100 = 30.057 %

Калькулятор массы

Вычисление молярной массы

To calculate molar mass of a chemical compound enter its formula and click ‘Compute’. В химической формуле, вы можете использовать:

• Любой химический элемент. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al.
• Функциональные группы:D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
• круглые () и квадратные [] скобки.
• Общие составные имена.

Примеры расчета молярной массы:
NaCl,
Ca(OH)2,
K4[Fe(CN)6],
CuSO4*5H2O,
water,
nitric acid,
potassium permanganate,
ethanol,
fructose.

Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.

Вычисление молекулярной массы (молекулярная масса)

Для того, чтобы рассчитать молекулярную массу химического соединения, введите её формулу, указав его количество массы изотопа после каждого элемента в квадратных скобках.

Примеры молекулярные вычисления веса:
C[14]O[16]2,
S[34]O[16]2.

Определение молекулярной массы, молекулярный вес, молекулярная масса и молярная масса

• Молекулярная масса ( молекулярной массой ) это масса одной молекулы вещества, выражающаяся в атомных единицах массы (и). (1 и равна 1/12 массы одного атома углерода-12)
• Молярная масса ( молекулярной массой ) является масса одного моля вещества и выражается в г / моль.

Массы атомов и изотопов с NIST статью .

См. также: молекулярные массы аминокислот

Molar mass of Fe2O3 = 159.6882 g/mol

Convert grams Iron(III) Oxide to moles

or

moles Iron(III) Oxide to grams

Molecular weight calculation:
55.845*2 + 15.9994*3

Percent composition by element

Element: Iron
Symbol: Fe
Atomic Mass: 55.845
# of Atoms: 2
Mass Percent: 69.943%

Element: Oxygen
Symbol: O
Atomic Mass: 15.9994
# of Atoms: 3
Mass Percent: 30.057%

Calculate the
molecular weight of a chemical compound

More information
on molar mass and molecular weight

In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.

Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.

Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights.

The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. We use the most common isotopes. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.

Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.

A common request on this site is to convert grams to moles. To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion. This site explains how to find molar mass.

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.

Справочник содержит названия веществ и описания химических формул (в т.ч. структурные формулы и скелетные формулы).

Общее число найденных записей: 1.
Показано записей: 1.

Finding Molar Mass

Read our article on how to calculate molar mass.

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Find the Molar Mass of Fe(2O₃) Step-by-Step

There are 4 easy steps to find the molar mass of Fe(2O3) based on its chemical formula.

1. Count The Number of Each Atom

The first step to finding the molar mass is to count the number of each atom present in a single molecule using the chemical formula, Fe(2O3):

2. Find Atomic Mass of Each Element

Next, using the periodic table, find the atomic mass in g/mol of each element (the molar mass of an element is equal to its atomic mass):

3. Compute Mass of Each Element

Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Fe(2O3):

4. Sum Each Element’s Mass

Finally, add together the total mass of each element to get the molar mass of Fe(2O3):

55.845 g/mol + 95.9964 g/mol = 151.8414 g/mol