Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti‑knocking agents. a 6.897g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen‑rich environment. the products of the combustion were 7.5 g co2(g) and 3.841 g h2o(g).

determine the empirical formula of the gasoline additive.

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Which of these is a physical property

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.