What is the expected outcome of adding a catalyst to a chemical reaction?
a. the reaction will speed up.
b. chemical equilibrium will not be reached.
c. the reaction will slow down.
d. no change will occur.

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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може ли да зареждате повече информация, моля

i think it's letter a.