Question

Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. A 3.279 g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen rich environment. The products of the combustion were 3.569 g of CO2(g) and 1.826 g of H2O(g). Insert subscripts below to appropriately display the empirical formula of the gasoline additive:
I got C2H5 but I do not know how to get the empirical formula for CHPb

Answer 1

I worked this for you a few days ago. Did you not see it? not understand it? Show your work that you've done and we can go from there. The empirical formula is C8H20Pb