
Hóa - Bài 7 Đề cương
Quiz
•
Chemistry
•
7th Grade
•
Easy
Ba Bui
Used 5+ times
FREE Resource
33 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
7.2. Cho công thức của ethanol là C2H5OH. Số nguyên tử H có trong ethanol bằng
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
7.3. Tỉ lệ số nguyên tử của các nguyên tố Ca, C, O trong công thức CaCO3 là
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
7.4. Hợp chất sodium carbonate có công thức hóa học là Na2CO3 thì tỉ lệ các nguyên tố theo thứ tự Na : C : O là
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
CrSO4
Cr(OH)3
Cr2O3
Cr2(OH)3
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fe2O3
Fe2O
FeO
Fe3O2
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
P2O3
P2O5
P4O4
PO5
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