Why is claudius unable to truly repent for his sin of killing his brother?

Because he is not willing to let go of his riches, his title and his queen.

Throughout the play, Claudius gives us information that hints at the fact that he is somewhat regretful. He seems concerned with getting into heaven, and he also claims that what he has done is wicked. However, he does not seem to be truly regretful. If he was, he would do anything to rectify the situation. This would mean giving up his title, his riches and his wife, and allowing Hamlet to become king. However, he is too attached to material things, and is not ready to let them go.

explanation:

why r u giving free points

the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."