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4.) How well do the following substances approximate to an ideal gas? Rank on a scale of 0 (not at all) to 3 (very well indeed).

a.) neon at STP 3

b.) supercritical CO 1

c.) oxygen at 300 $^{\rm o}$ K and Pa 3

d.) water vapour at 450 $^{\rm o}$ K and 10 atmospheres 2

e.) liquid water 0

Score 1 point for any score within 1 of the given rating, but for (e) score a point only for 0!

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Judith McGovern 2004-03-17

a.) neon at STP	3
b.) supercritical CO	1
c.) oxygen at 300 $^{\rm o}$ K and Pa	3
d.) water vapour at 450 $^{\rm o}$ K and 10 atmospheres	2
e.) liquid water	0