Defin steric effect, resonance effect and medium effect? give at least 3 example for each?

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

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.