convert methanamine to N-methylmethanamine plss someoneee urgentt hellppp if the answer is correct and appropriate..will give 15 pointss​

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.