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hóa
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Easy
Anh Lam
Used 13+ times
FREE Resource
Enhance your content in a minute
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: 14 gam khí nitrogen có bao nhiêu phân tử?
A. 6.10^ 23
B. 1,5.10^23
C. 9.10^23
D. 3.10^23
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Thể tích của 5,6 gam khí CO ở điều kiện chuẩn là
A. 4,958 lít.
B. 6,1975 lít.
C. 7,437 lít.
D. 9,916 lít.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Ở đkc, 1,25 mol khí carbon dioxide CO 2 có thể tích là
A. 30,9875 lít.
B. 24,79 lít.
C. 18,5925 lít.
D. 60,87 lít.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: 16 gam khí oxygen có bao nhiêu phân tử?
A. 3.10^ 23 .
B. 6.10^ 23 .
C. 9.10^ 23 .
D. 12.10^23 .
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Phát biểu nào sau đây không đúng?
A. Mol là lượng chất chứa 6.10 23 nguyên tử hay phân tử của chất đó.
B. Con số 6.10 23 được gọi là số Avogadro và được ký hiệu là N A .
C. 1 mol khí chlorine có chứa 6.10 23 nguyên tử chlorine.
D. 0,5 mol NaCl có chứa 3.10 23 phân tử NaCl.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Phát biểu nào sau đây không đúng?
A. Số 6.10 23 được gọi là số Avogadro và ký hiệu là N A .
B. 1 mol Al 2 O 3 chứa 3N A nguyên tử Al.
C. 0,5 mol phân tử khí O 2 chứa 3.10 23 phân tử O 2 .
D. Mol là lượng chất chứa 6.10 23 nguyên tử / phân tử của chất đó.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Tỷ khối của khí CH 4 đối với khí SO 2 là
A. 0,25.
B. 2.
C. 0,5.
D. 4.
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