KHTN 8 - ÔN TẬP HK (MOL - TỶ KHỐI CHẤT KHÍ)
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Easy
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mối quan hệ giữa số mol và khối lượng là:
n = M/m
m = M/n
n = m/M
n = m.M
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Số mol phân tử N2 có trong 280 gam nitrogen là
9 mol
10 mol
11 mol
12 mol
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Khối lượng của 0,1 mol khí H2S là
m= n x M= 0,1 x 34 =3,4 gam
m= n x M= 0,1 x 44 = 4,4 gam
m= n x M= 0,1 x 22 = 2,2 gam
m= n x M= 0,1 x 66 = 6,6 gam
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tỉ khối của khí A đối với khí B là:
dA/B = nA/nB
dA/B = MA/MB
dA/B = nB/nA
dA/B = MB/MA
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tỉ khối của một khí với không khí là:
dX/kk = nX/29
dX/kk = 29/nX
dX/kk = 29/MX
dX/kk = MX/29
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Thể tích của 0,5 mol CO2 (điều kiện chuẩn) là
22,4 lít
12,395 lít
24,79 lít
5,6 lít
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Khí CO2 nặng hay nhẹ hơn không khí bao lần?
Nặng hơn không khí 1,5 lần
Nhẹ hơn không khí 3 lần
Nặng hơn không khí 2,2 lần
Nhẹ hơn không khí 2 lần
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