Assertion: gas's temperature | /r/HasProperty | 520 kelvin
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Source sentences:
text: It can be low density or high density: low density polyethylene is extruded[verification needed] using high pressure (1000-5000 atm) and high temperature (520 Kelvin), while high density polyethylene is extruded[verification needed] using low pressure (6-7 atm) and low temperature (333-343 Kelvin).