Final answer:
The percent composition of nitrogen in the compound is found by subtracting the mass of oxygen from the total mass of the compound to get the nitrogen mass and then dividing this by the total mass of the compound. The calculation results in a percent composition of nitrogen of 63.67%.
Step-by-step explanation:
To find the percent composition of nitrogen in the compound, we can use the mass of the compound and the mass of the oxygen to determine the mass of nitrogen. Since the compound is only made up of nitrogen and oxygen, the mass of nitrogen can be found by subtracting the mass of oxygen from the total mass of the compound.
Mass of nitrogen = Total mass of compound - Mass of oxygen
Mass of nitrogen = 43.7 g - 15.88 g
Mass of nitrogen = 27.82 g
Next, we calculate the percent composition of nitrogen by dividing the mass of nitrogen by the total mass of the compound and then multiplying by 100 to get the percentage.
Percent composition of nitrogen = (Mass of nitrogen / Total mass of compound) * 100%
Percent composition of nitrogen = (27.82 g / 43.7 g) * 100%
Percent composition of nitrogen = 63.67%
Therefore, the percent composition of nitrogen in the compound is 63.67%, which corresponds to option B.