The diagram shows a heating curve for water. which statement best describes what is happening at segment w-x? water is absorbing heat. water is releasing heat. a liquid is changing to a gas. a gas is changing to a liquid.

A200 g lead frying pan gains 2000 joules of heat. what is the change in temperature

Hunter is in lab. he clears a spot on his lab bench to start working. he also puts his lab coat and goggles on. he then identifies where all of the safety equipment is. he notices his station is next to the fume hood, which ventilates the chemicals stored there. the noise of the fume hood was bothersome, so hunter turned it off. which could be an error in his set-up? he should not turn off the fume hood.  he should wait to put on his coat until after the directions are given.  he should wait to put on his goggles until after the directions are given.  he should not sit next to the fume hood. 

Every winter i fly home to chicago. it takes 3 hours. what is my average speed?