Q3.An organic compound made of C, H and N contains 20% nitrogen. What will be its molecular mass if it contains only one nitrogen atom in it?

A

70

B

140

C

100

D

65

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Solution
A. 70
Atomic mass of nitrogen is 14 amu and if it comprises 20% of the molecule then 100% would be 14 X 5 = 70 as it is given that the molecule has only one nitrogen atom.

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Q3.An organic compound made of C, H and N contains 20% nitrogen. What will be its molecular mass if it contains only one nitrogen atom in it? A 70 B 140 C 100 D 65

A. 70 Atomic mass of nitrogen is 14 amu and if it comprises 20% of the molecule then 100% would be 14 X 5 = 70 as it is given that the molecule has only one nitrogen atom.

Q3.An organic compound made of C, H and N contains 20% nitrogen. What will be its molecular mass if it contains only one nitrogen atom in it?

A

70

B

140

C

100

D

65

A. 70
Atomic mass of nitrogen is 14 amu and if it comprises 20% of the molecule then 100% would be 14 X 5 = 70 as it is given that the molecule has only one nitrogen atom.