Final answer:
To find the chemical formula of the compound, calculate the number of moles of each element in the sample, determine the empirical formula using the mole ratios of the elements in the product compounds, and finally determine the molecular formula by multiplying the subscripts in the empirical formula by a whole number.
Step-by-step explanation:
To find the chemical formula of the compound, we need to determine the number of moles of each element present in the given sample.
From the given information, we can calculate the number of moles of nitrogen, oxygen, and hydrogen in the product compounds:
Number of moles of NO₂ = 4.00 g / molar mass of NO₂
Number of moles of H₂O = 7.00 g / molar mass of H₂O
Next, we need to find the empirical formula of the compound using the mole ratios of the elements in the product compounds.
Finally, the molecular formula can be determined by multiplying the subscripts in the empirical formula by a whole number that will result in the molecular mass of the compound.
Thus, the chemical formula of the compound is determined using mole ratios and the molecular mass of the compound.