Which statement best describes the amount of catalyst that remains at the end of a reaction?

more catalyst is present at the end than at the beginning of the reaction.
less catalyst is present at the end than at the beginning of the reaction.
the amount of catalyst is the same at the end as at the beginning of the reaction.
the catalyst is consumed by the reaction, so none remains at the end of the reaction.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

Rays from the sun are not considered matter true or false