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Chemistry
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Acids Bases and Salts
23
Biochemistry Introduction
217
Characteristics of Acids Bases and Salts
114
Chemical Industries
66
Environmental Chemistry: Atmosphere
95
Environmental Chemistry: Water
61
Chemical Equilibrium
46
Hydrocarbons
86
Organic Chemistry
92
The Atmosphere
25
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Biochemistry Introduction
Hemolysis of red blood cells and sterility are caused by the deficiency of
vitamin E
vitamin K
vitamin C
vitamin D
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
What is the pH of the carrot?
5.5 – 7.0
6.5 – 7.0
6.0 – 7.5
6.5 – 7.5
Author:
rikazzz
Comment
Chemical Equilibrium
In equilibrium constant expression, the concentration of products is taken in/on the
right side
left side
numerator
denominator
Author:
rikazzz
Comment
Organic Chemistry
Butane (alkane) has
3 carbon atoms
5 carbon atoms
4 carbon atoms
2 carbon atoms
Author:
rikazzz
Comment
Everyday Science
The general formula for alcohols is
R-OH
R-O-R
R-COOH
R-NH2
Author:
rikazzz
Comment
Biochemistry Introduction
Deficiency of vitamin K causes
sterility
hemorrhage
scurvy
rickets and Osteomalacia
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
What is the pH of saliva?
6
7
8
9
Author:
rikazzz
Comment
Hydrocarbons
What is the state of dichloromethane at room temperature?
solid
liquid
gas
plasma
Author:
rikazzz
Comment
Organic Chemistry
What is the general formula of alkanes?
CnH2n+2
CnH2n
CnH2n-2
CnHn
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Amount of ozone contained by stratosphere is
10ppm
20ppm
30ppm
40ppm
Author:
rikazzz
Comment
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