nd how does she plan to help him?
In short, Lady Macbeth thinks Macbeth could be a good king, but he lacks the hard heartedness, which would allow him to get to the position. She'll talk him into it.

10. What is Lady Macbeth's "prayer" to the spirits after she learns Duncan is coming?
She wants to be filled with evil power and cruelty in order to succeed in their conspiracy and make Macbeth king.

11. What advice does Lady Macbeth give Macbeth when he arrives home?
She tells him he must learn to look innocent even when his heart is full of evil. He has to learn to hide his true feelings. 

12. What are Macbeth's arguments to himself against killing Duncan?
If Macbeth kills Duncan, then he is setting a precedent that subjects can kill kings and be rewarded with the kingship.  Macbeth is Duncan's kinsman and his subject, as well as his host. Duncan is a good king and virtuous man; he has done no particular evil. Duncan is a popular king, and his death would bring sorrow and unrest upon Scotland.

13. What arguments does Lady Macbeth use to convince Macbeth to commit the murder?
She tells him not to be a coward. She tells him to be a man and go get what he wants. She says if she had made the promise to do so, that she would have killed her own baby to carry out that promise.

14. What is Lady Macbeth's plan?
She will drug the king’s guards with their drink. Macbeth will then go into the king's room and murder him in his sleep.  They will place the weapons on the guards to make them appear guilty.

Act II
1. What is Macbeth's lie to Banquo about the witches' predictions?
He says he doesn't even think about them.
 
2. What is the signal Lady Macbeth is to give Macbeth to let him know that she has taken care of the guards (grooms)?
She will ring a bell.
 
3. What excuse does Lady Macbeth give for not killing Duncan herself?
He looked like her father sleeping there.
 
4. After Macbeth kills Duncan, he goes to Lady Macbeth and is con...