1. 15 g of a metallic element needs 300 cm3 of oxygen for complete reaction, at 298k and 1 atm pressure, to form an oxide which contains o2– ions. What could be the identity of this metallic element?.

Which type of reaction always has an element and a compound as reactants

What is the polyatamic ion of thiosulfate

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.