According to the collision theory, when can a chemical reaction occur? a. when enough activation energy is added to correct the orientation of the particle collisions
b. when reactants collide with energy to intersect their valence shells and form new bonds
c. when reactants collide with enough mass to form new bonds and break apart the reactants
d. when the proper catalyst is added to break the chemical bonds in the reactants

Someone please help me
And I mark you as brainlist!!

23) today, Adele put the books on the shelves for “me”

Is “me”

• nominative case
• objective case
• possessive case

24) “they” studied hard and learned the new material.

Is “they”

• nominative case
• objective case
• possessive case

25) the conductor and the musicians of the symphony ___ very talented.

Is or are?

26) the girl in the red and white kimono was

I or me?

27) the trees are shedding “their” leaves

Is “their”

• nominative case
• objective case
• possessive case

28) the highest mountains in the world in the Himalayas

Rise or rises?

An egg, or a sack of flour