graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat
latent heat
Answer from: Quest
pythagoras' theorem
square root (-5^2+9^2)
square root (25+81)
square root (106)
angle is tan^-1(9/5)
neg x, pos y
Answer from: Quest
a. carbon dioxide, i took the test and got it right.
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