What would be the final temperatur of a 73.14g sample of cobalt with an initial temperature of 102.0c after it loses 6800

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Which other elements contain the same number of outer electrons as sodium

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.