Luyện tập chương 1 hóa 8
Quiz
•
Chemistry
•
8th Grade
•
Hard
Minh Nguyễn
Used 12+ times
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15 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Phân tử khối của hợp chất CaCO3 là
70
80
90
100
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hợp chất có CTHH H3XO4 có PTK là 98 đvC. Vậy X là:
C
S
P
N
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức hóa học của axit nitric ( biết trong phân tử có 1H, 1N, 3O) là:
HNO3
H3NO
H2NO3
HN3O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cách viết 3H2O diễn đạt là
Ba nguyên tử nước
Ba phân tử hiđro và 3 nguyên tử oxi
Ba phân tử nước
Sáu nguyên tử hiđro và 3 nguyên tử oxi
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tính phân tử khối của Đồng (II) Nitrat (Cu(NO3)2
188
160
342
180
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hợp chất có CTHH Ba(HXO3)2 có PTK là 259 đvC. Vậy X là:
C = 12
S = 32
P = 31
N = 14
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các CTHH: N2O, NO2, N2O3 hóa trị của nguyên tố N lần lượt là:
I, II, III
I, II, IV
I, IV, VI
I, IV, III
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