DẠNG 5. MOL VÀ TỈ KHỐI CHẤT KHÍ (KHTN8)

Interactive Video
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Chemistry
•
8th Grade
•
Hard
Teacher 9.2024
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hãy cho biết số phân tử có trong 0,5 mol phân tử H2.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0,5 mol
0,3 mol
0,15 mol
0,25 mol
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính số mol của 3,6 gam nước (H2O).
64,8 mol
0,2 mol
0,5 mol
5 mol
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính khối lượng của 0,5 mol calcium carbonate (CaCO3).
5 gam
50 gam
200 gam
108,5 gam
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính thể tích (đkc) của 0,25 mol NH3
5,6 L
6,1975 L
2,479 L
6,9175 L
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính thể tích (đkc) của 4,4 g khí CO2
24,79 L
2,24 L
109,076 L
2,479 L
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khí O2 nặng hay nhẹ hơn so với không khí bao nhiêu lần?
Khí O2 nặng hơn không khí 1,1 lần
Khí O2 nhẹ hơn không khí 1,1 lần
Khí O2 nặng bằng không khí
Khí O2 nặng hơn không khí 2 lần
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