A 2.197 g sample of a compound containing only carbon, hydrogen and oxygen is burned in an excess of dioxygen producing 4.197 g CO2 and 2.578 g H20. What is the empirical formula of
the compound?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Which element would mostly likely have an electron affinity measuring closest to zero

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?