
Câu hỏi Hóa học
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Easy
Nga Thúy
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khối lượng nguyên tử oxygen là 16 amu, khối lượng mol nguyên tử của oxygen là:
32 kg/mol.
16 kg/mol.
16 g/mol. (đúng)
32 g/mol.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thể tích của 0,6 mol khí CH4 ở điều kiện chuẩn là:
14,874 lít.( đúng)
1,4874 lít.
148,74 lít.
1487,4 lít.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy nào biểu thị đúng kết quả về khối lượng của số mol các chất sau: 0,1 mol S, 0,25 mol C?
3,2 gam S, 3 gam C ( đúng)
0,32 gam S, 0,3 gam C.
3,2 gam S, 6 gam C.
0,32 gam S, 3 gam C.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số mol của các chất tương ứng với 15 gam CaCO3; 9,125 gam HCl; 100 gam CuO là:
0,35 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.(đúng)
0,25 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.
0,15 mol CaCO3; 0,75 mol HCl; 1,25 mol CuO.
0,15 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
X là chất khí có tỉ khối so với H2 bằng 22, phân tử X có chứa 1 nguyên tử O. X là khí nào?
NO.
CO.
N2O ( đúng).
CO2.
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