0.2 g of an organic compound gave 0.17 g NH $_{3}$ in kjeldhal's method. The percentage weight of nitrogen in the given compound is:

60%

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80%

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70%

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90%

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Solution

The correct option is D 70%
The molar mass of $N H_{3}$ is 17 g/mol.
The atomic mass of $N$ is 14 g/mol.
0.2 g of an organic compound gave 0.17 g $N H_{3}$ in kjeldhal's method. The percentage weight of nitrogen in the given compound is
$\frac{14}{17} \times \frac{0.17}{0.2} \times 100 = 70$ %

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0.2 g of an organic compound gave 0.17 g NH3 in kjeldhal's method. The percentage weight of nitrogen in the given compound is:

The correct option is D 70%The molar mass of NH3 is 17 g/mol.The atomic mass of N is 14 g/mol. 0.2 g of an organic compound gave 0.17 g NH3 in kjeldhal's method. The percentage weight of nitrogen in the given compound is 1417×0.170.2×100=70 %

0.2 g of an organic compound gave 0.17 g NH $_{3}$ in kjeldhal's method. The percentage weight of nitrogen in the given compound is:

The correct option is D 70%
The molar mass of $N H_{3}$ is 17 g/mol.
The atomic mass of $N$ is 14 g/mol.
0.2 g of an organic compound gave 0.17 g $N H_{3}$ in kjeldhal's method. The percentage weight of nitrogen in the given compound is
$\frac{14}{17} \times \frac{0.17}{0.2} \times 100 = 70$ %