Как найти массу железа в граммах

ГДЗ Химия 8 класс класс Габриелян. §6. Примените свои знания. Номер №8

Решение

По таблице Д.И. Менделеева найдем относительную атомную массу:

Ar(Fe) = 56 а.е.м.
Дано:

Ar(Fe) = 56 а.е.м.
1 а.е.м. = 1,647 *

10

−
27

кг
Найти:

m

а

т

(Fe) − ?
Решение:

m(Fe) = Ar(Fe) * 1,647 *

10

−
27

(кг)

m(Fe) = 56 * 1,647 *

10

−
27

= 9,2232 *

10

−
23

(г)
Ответ: 9,2232 *

10

−
23

(г)

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More information from the unit converter

How many moles Iron in 1 grams?
The answer is 0.01790670606142.
We assume you are converting between moles Iron and gram.
You can view more details on each measurement unit:
molecular weight of Iron or
grams
The molecular formula for Iron is Fe.
The SI base unit for amount of substance is the mole.
1 mole is equal to 1 moles Iron, or 55.845 grams.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between moles Iron and gram.
Type in your own numbers in the form to convert the units!

Quick conversion chart of moles Iron to grams

1 moles Iron to grams = 55.845 grams

2 moles Iron to grams = 111.69 grams

3 moles Iron to grams = 167.535 grams

4 moles Iron to grams = 223.38 grams

5 moles Iron to grams = 279.225 grams

6 moles Iron to grams = 335.07 grams

7 moles Iron to grams = 390.915 grams

8 moles Iron to grams = 446.76 grams

9 moles Iron to grams = 502.605 grams

10 moles Iron to grams = 558.45 grams

Want other units?

You can do the reverse unit conversion from
grams Iron to moles, or enter other units to convert below:

Common amount of substance conversions

Details on molecular weight calculations

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.

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.

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.

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.

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.

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.

Metric conversions and more

ConvertUnits.com provides an online
conversion calculator for all types of measurement units.
You can find metric conversion tables for SI units, as well
as English units, currency, and other data. Type in unit
symbols, abbreviations, or full names for units of length,
area, mass, pressure, and other types. Examples include mm,
inch, 100 kg, US fluid ounce, 6’3″, 10 stone 4, cubic cm,
metres squared, grams, moles, feet per second, and many more!

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