Question

What is the empirical formula for nitroglycerin?

Answer 1

The molecular formula for nitroglycerin is `"C"_3"H"_5"N"_3"O"_9`.
https://en.wikipedia.org/wiki/Nitroglycerin
This is also the empirical formula.

Explanation:

The empirical formula represents the lowest whole number ratio of elements in a compound. In the case of nitroglycerin, its formula `"C"_3"H"_5"N"_3"O"_9` cannot be reduced further and keep the ratios whole numbers. Therefore, its molecular formula is the same as its empirical formula.