A chemical equation can be used to solve stoichiometry problems provided that it indicates only the forward reaction and not the reverse.
indicates that reactants are in the gas phase and are not solids or liquids.
includes the coefficients that are needed for balancing the equation.
includes the state of matter after each substance.

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.

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table