
Стехиометрия, водород
Authored by Макс Андреев
Chemistry
9th Grade
Used 1+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В реакции 2H₂ + O₂ → 2H₂O масса продуктов равна массе реагентов.
правда
ложь
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Сколько граммов воды (H₂O) образуется при сгорании 4 г водорода (H₂) в избытке кислорода?
Уравнение реакции:
2H₂ + O₂ → 2H₂O
9 г
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какой объем кислорода (O₂) потребуется для полного сгорания 5 л пропана (C₃H₈) при нормальных условиях?
Уравнение реакции:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
5 л
10 л
15 л
20 л
25 л
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какой объем водорода (H₂) выделится при взаимодействии 6 г магния (Mg) с избытком соляной кислоты (HCl)?
Уравнение реакции:
Mg + 2HCl → MgCl₂ + H₂
5.6 л
11.2 л
22.4 л
44.8 л
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
В какой порции вещества содержится больше молекул: в 100 г озона (O₃) или в 100 г кислорода (O₂)?
в 100 г озона (O₃)
в 100 г кислорода (O₂)
одинаково
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как называется процесс получения водорода из воды с помощью электричества?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой металл не реагирует с соляной кислотой с выделением водорода?
Магний
Алюминий
Медь
Железо
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