They have to confess. Only a confession can clear the conscience thoroughly.
9. Does Raskolnikov demonstrate this need? Give details.

No, instead he tries to hide his conscience. For example, he takes all that he has stolen and buries it under a rock. This is the way he is trying to deal with the guilt. He is trying to hide what he has done; essentially, he is pretending it never happened.
10. What does Raskolnikov do with the spoils of his crime?

He hides all that he has attained. Specifically, he buries it under a rock to essentially please his conscience. He contemplates throwing it into the river but later decides to bury it so it won’t resurface again.
11. Was robbery his motive? Why? Why not?

Not completely. His motive is to kill her and also take her money. This is why he brings an axe with him to the pawnbroker’s place.

12. Is Raskolnikov suffering? Explain

I believe he is suffering but he should suffer more for what he did. His guilt is extremely destructive. For example, he faints at the police station when they are talking about the crime. Even more, he feels alienated and is becoming paranoid about all the details of the crime. He is trying to hide blood spots and the goods that he stole when he was doing his crime.
13. Is guilt a constructive or destructive emotion?

Destructive. I think that if you don’t confess, your body gives you a punishment through guilt which will drive you crazy until you realize that you must confess.
14. When is guilt healthy? Unhealthy?

Guilt is healthy most of the time because it is your body’s way of telling you that you did something wrong, when your head tells you it’s okay. This also gives you incentive to correct your mistakes. Guilt is unhealthy in the following example: if someone close to you passes away and you blame yourself. You shouldn’t blame yourself because death is something that you cannot prevent.
15. Describe Raskolnikov’s behavior at Razumihin’s apartment.

Raskolnikov arrives at Razumihin’s apartment not knowing what he came for. He doesn’t even realize initially that he is there. But once he enters he wants to tell him something; specifically, he wants some sort of help. However, he decides not to confess or ask for help.
16. Why does Raskolnikov go to Razumihin’s apartment?

He doesn’t know initially, but then when he is at the apartment he desires advice and help. The second time that he goes into Razumihin’s apartment he wants to return all the papers that his friend provided him for a possible job that he can get.