Seperated 7. A student mixed oxygen gas and gold in a beaker and nothing happened. Is the
material in the beaker a compound? Give a reason for your answer

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

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.