A material system contains 65 "A" atoms and 35 "B" atoms, and the B atoms are 18 times as massive as the A atoms (the mass of a B atom is 18x higher than an A atom). What is the composition of this system in terms of at% B?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.