Hóa 8
Quiz
•
Chemistry
•
8th Grade
•
Medium
Jadeite TTB
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14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Tên gọi của nguyên tố có kí hiệu hóa học là Mg:
Magie
Đồng
Kẽm
Nhôm
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Tính phân tử khối của chất có công thức là Fe2(SO4)3
Cho biết Fe = 56, S = 32, O =16
400 đvC
300 đvC
250 đvC
180 đvC
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Kí hiệu hóa học của bari là:
Ca
Ba
P
N
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Tính số mol của Al2O3 cho biết : 32,5 gam Al phản ứng với khí oxi tạo thành hợp chấp Al2O3 (pthh= 4Al + 3O2 = 2Al2O3
0,1 (n)
0,6(n)
11,2(n)
1,2 (n)
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Tên gọi của nguyên tố có kí hiệu Ag là:
Natri
Kẽm
Kali
Bạc
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Lưu huỳnh trong công thức SO2 có hóa trị mấy
Cho biết O (II)
IV
III
VI
V
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Sắt trong công thức Fe(NO3)3 có hóa trị mấy
Cho biết NO3 (I)
II
I
III
IV
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