A compound contains only iron, Fe, and oxygen, O. The compound is 72.30% iron and 27.64% oxygen. What is the empirical formula for the compound?

What is the cellular process that releases the energy stored in food molecules

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg