how much heat is gained by copper when 77.5g of copper is warmed. from 21.4 degrees celsius to 75.1 degrees celsius?

2. how is heavy water different from normal water

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

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.