Butyric acid is a compound that smells like "baby spit-up", but it can be reacted with ethyl alcohol to make artificial pineapple fragrance (ethyl butyrate). Butyric acid's percent composition is 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen. Calculate its empirical formula.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.