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Answer:
10.)A
11.)B
12.)B
13.)A
14.)D
15.)B
16.)C
The Value of the Substances:
( 15 and 16 )
Cl2 = 35.4527 X 2 = 70.9054
CH4 = C=12.01 + H4=4x1=4 =16.01
H2O = H 1 x 2 =2 + O=16 = 18
NH3 = N= 14 + H 1 X 3 = 3 =17
N2 = 14 X 2 =28