- Относительная молекулярная масса C6H12O6: 180.15588
- Молярная масса C6H12O6: 180.15588 г/моль (0.18016 кг/моль)
| Элемент | Всего атомов | Атомная масса, а.е.м. | Общая масса атомов, а.е.м. |
|---|---|---|---|
| C (углерод) | 6 | 12.0107 | 72.0642 |
| H (водород) | 12 | 1.00794 | 12.09528 |
| O (кислород) | 6 | 15.9994 | 95.9964 |
| 180.15588 |
Расчёт молярной и относительной молекулярной массы C6H12O6
- Mr[C6H12O6] = Ar[C] * 6 + Ar[H] * 12 + Ar[O] * 6 = 12.0107 * 6 + 1.00794 * 12 + 15.9994 * 6 = 180.15588
- Молярная масса (в кг/моль) = Mr[C6H12O6] : 1000 = 180.15588 : 1000 = 0.18016 кг/моль
Расчёт массовых долей элементов в C6H12O6
- Массовая доля углерода (C) = 72.0642 : 180.15588 * 100 = 40.001 %
- Массовая доля водорода (H) = 12.09528 : 180.15588 * 100 = 6.714 %
- Массовая доля кислорода (O) = 95.9964 : 180.15588 * 100 = 53.285 %
Калькулятор массы
Вася Иванов
Мореплаватель — имя существительное, употребляется в мужском роде. К нему может быть несколько синонимов.
1. Моряк. Старый моряк смотрел вдаль, думая о предстоящем опасном путешествии;
2. Аргонавт. На аргонавте были старые потертые штаны, а его рубашка пропиталась запахом моря и соли;
3. Мореход. Опытный мореход знал, что на этом месте погибло уже много кораблей, ведь под водой скрывались острые скалы;
4. Морской волк. Старый морской волк был рад, ведь ему предстояло отчалить в долгое плавание.
Рассчитайте массу $9 * 10^{23}$ молекул глюкозы $C_{6}H_{12}O_{6}$.
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ГДЗ Химия 8 класс рабочая тетрадь Габриелян. §18. Часть II. Номер №3
Решение
Дано:
N ($C_{6}H_{12}O_{6}$) = $9 * 10^{23}$ молекул
Найти:
m ($C_{6}H_{12}O_{6}$) − ?
Решение:
m ($C_{6}H_{12}O_{6}$) = n * M
M ($C_{6}H_{12}O_{6}$) = 12 * 6 + 1 * 12 + 16 * 6 = 180 г/моль
n ($C_{6}H_{12}O_{6}$) = N : Na = $9 * 10^{23}$ молекул : $6,02 * 10^{23}$ молекул/моль = 1,5 моль
m ($C_{6}H_{12}O_{6}$) = 1,5 моль * 180 г/моль = 270 г
Ответ: m ($C_{6}H_{12}O_{6}$) = 270 г
Тема: Определите массу одной молекулы глюкозы (Прочитано 4676 раз)
0 Пользователей и 1 Гость просматривают эту тему.
3. Определите массу одной молекулы глюкозы C6H12O6, находящейся в крови человека. Сделать рисунок.
Записан
Решение.
Определим молярную массу одной молекулы глюкозы
М(C6H12O6) = (12∙6 + 1∙12 + 16∙6) ∙10-3 = 468 ∙10-3 кг/моль.
Массу одной молекулы определим по формуле
[ {{m}_{0}}=frac{M}{{{N}_{A}}}.,{{m}_{0}}=frac{468cdot {{10}^{-3}}}{6,02cdot {{10}^{23}}}=77,74cdot {{10}^{-26}}. ]
NА = 6,02∙1023 моль-1 – число Авогадро.
Ответ: 77,74∙10-26 кг.
« Последнее редактирование: 21 Октября 2018, 13:46 от alsak »
Записан
More information from the unit converter
How many moles Glucose in 1 grams?
The answer is 0.0055507486072617.
We assume you are converting between moles Glucose and gram.
You can view more details on each measurement unit:
molecular weight of Glucose or
grams
The molecular formula for Glucose is C6H12O6.
The SI base unit for amount of substance is the mole.
1 mole is equal to 1 moles Glucose, or 180.15588 grams.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between moles Glucose and gram.
Type in your own numbers in the form to convert the units!
Quick conversion chart of moles Glucose to grams
1 moles Glucose to grams = 180.15588 grams
2 moles Glucose to grams = 360.31176 grams
3 moles Glucose to grams = 540.46764 grams
4 moles Glucose to grams = 720.62352 grams
5 moles Glucose to grams = 900.7794 grams
6 moles Glucose to grams = 1080.93528 grams
7 moles Glucose to grams = 1261.09116 grams
8 moles Glucose to grams = 1441.24704 grams
9 moles Glucose to grams = 1621.40292 grams
10 moles Glucose to grams = 1801.5588 grams
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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.
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.
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.
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.
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