Acetylene, C2H2, burns completely in oxygen, O2, to produce carbon dioxide, CO2, and water, H2O, according to: 2C2H2 + 5O2 → 4CO2 + 2H2O If 8.3 mol of C2H2 are completely burned in excess oxygen, the number of moles of CO2 produced are:

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?