Предмет: Химия, автор: Аноним

Обчислити масу 0,25 моль алюміній сульфіду Al2,S3​

Ответы

Автор ответа: dyexfnf
0

Ответ:

Объяснение:

Обчислимо молекулярну масу речовини:

М(Al2S3) = 27 * 2 + 32 * 3 = 150 г/моль

Знайдемо масу речовини:

m(Al2S3) = n(Al2S3​) * М(Al2S3) = 0,25 * 150 = 37,5 г

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: barbizaz81
D. Halloween Writing Task 2. Look at the picture of Burabay. Write a paragraph about this place using the following questions. Write 5 sentences. 1. Where is this place? 2. What is there in this place? 3. How many lakes are there? 4. Which lake is the biggest? 5. What is the name of the highest mountain? 6. Which animals can you see here? 7. What can tourists do here? 8. Why is this place famous? 9. Do you like this place? Why? помогите ​
1 год назад
Предмет: Английский язык, автор: pilgujila6
READING 3 Read the article about the Hawalian language and complete the notes below. Use a maximum of TWO words or a number in each gap. The Hawaiian Language Hawaiian is one of around world languages. Hawaii is part of the 2 Hawaiian was the only language on the islands until the seventeen The first non-Hawaiian language to arrive on the islands was From the beginning of the century, all children had to speak English at school in Hawaii. About language today. people speak this /20 The World's Least Spoken LanguaRE? There are about 6,900 languages spoken in the world. The number of speakers of these languages goes from very large (there are nearly 1 billion speakers of Mandarin Chinese!) to finy One of those languages which have a very small number of speakers is Hawaiian People speak this language in the American state of Hawaii, which is actually an island in the middle of the Pacific Ocean. Through most of the eighteenth century, Hawaiian was the only language people on the islands used, but European travellers started to arrive and brought their languages with them, starting with explorers from England in 1778 and then the Spanish arrived in 1789. The number of Hawaiian speakers started to go down when many schools started to use English as their main language for teaching From 1900 and for many years after, all students had to speak English and got into trouble if they spoke Hawaiian at school. By 1997, there were only 1,000 speakers of Hawaiian left who could use the language fluently The good news is that, thanks to the teaching of Hawaiian again in school, the number of fluent speakers is now up to over 24,000 people. So Hawaian is growing again!​
1 год назад
Предмет: Геометрия, автор: Аноним
Помогите очень срочно даю 100 баллов!!!
1 год назад
Предмет: Другие предметы, автор: AurikaNana
Какие типы деятельности улучшают стойкость?
-Как мы можем проверить изменения нашей температуры тела?
-Как мы можем проверить изменения частоты нашего дыхания?
6 лет назад
Предмет: Биология, автор: guljahonkurganova
Как происходит вегетативное размножение???
6 лет назад