Предмет: Химия, автор: viktoria656

m (Ca)=20г найти n (O^2)

viktoria656: СРОЧНО

Ответы

Автор ответа: svetka1574
1
20 г. Х моль
2Ca + O2 = 2CaO
n=2 моль. n=1 моль
М=40 г/моль
m=80 г
20 г Са. -. Х моль О2
80 г Са. -. 1 моль О2
n(O2)=20*1/80=0,25 моль
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Математика, автор: serebrakovaolesa7
Помогите пожалуйста решить номер 9
5 лет назад
Предмет: Математика, автор: ayselrahimova17
on
Alt
Ctrl
AyUp
Worksheet
Works.com
Calculating Area & Perimeter
Name:
Date:
Calculate the area and perimeter of each shape.
(2)
(3)
6
7
3
7
5
5
3
2.
6
2
8
Perimeter:
Perimeter:
Perimeter:
Area:
Area:
Area:
5 лет назад
Предмет: Английский язык, автор: volchanskaya7875
Вариант 1 A
Fill in the correct word
*weekly "ghost * ruined *puzzled * rush *knock *mines *worried *introduce *naughty *loud
1. She was ....... because her sister didn't come home after school.
2. There are a lot of ... health magazines that give good advice about diets.
3. The police were .... They had no idea who stole the money,
4. There were many .... buildings in the town that people wanted to rebuild.
5. The streets were empty. It was like a ... town.
6. There are many gold ... in South Africa,
7. Fred was very ... yesterday. He didn't do his homework.
8. You must ... on the door before you enter my room.
9. Can I... myself? My name is Henry Smith, 10. We have got a lot of time. You don't need to...​
5 лет назад
Предмет: Математика, автор: danilachuhneko
Уравнение
B*(103-86)=17
Помогите
8 лет назад
Предмет: Литература, автор: Natashka575
чем отличаются поговорки от пословиц?
даб 20 балов,только поскорей плиз!
8 лет назад