Test Hoá học cơ bản
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Medium
Giang Nguyễn
Used 8+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Số mol H trong (NH4)2SO4 là
A. 8.
B. 1.
C. 4.
D. 2.
Answer explanation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Số mol O trong Al2(SO4)3 là
A. 4
B. 3
C. 2
D. 12
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Số mol Oxi trong 3 mol Mg(NO3)2 là
A. 3
B. 2
C. 6
D. 18
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Số mol photpho trong 2 mol Ca3(PO4)2 là
A. 2
B. 4
C. 8
D. 16
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 5: khối lượng của 0,5 mol NaOH là
A. 23
B. 20
C. 46
D. 40
Answer explanation
m = n.M = 0,5.(23 + 16 + 1) = 20 gam
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 6: khối lượng của 0,2 mol CaCO3 là
A. 40
B. 100
C. 10
D. 20
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 7: thể tích của 0,3 mol khí CO2 ở điều kiện tiêu chuẩn là
A. 22,4 lít
B. 6,72 lít
C. 22,4 ml
D. 6,72 ml
Answer explanation
V = n.22,4 = 0,3.22,4 = 6,72 lít
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