What happens to a catalyst used in a reaction? A. It is bonded to the products
B. It is unchanged by the reaction
C. It is used up in the reaction
D. It is broken up by the reactants ​

What element breaks down into yttrium-90?

Why did southern business leaders want to increase the number of slaves

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.