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Res Unit 4

JCC Res Care Unit 4

QuestionAnswer
normal value for atmospheric pressure at sea level in units of atm., in. Hg., mm. Hg., torr, cm H2O, psia and kPa, convert from one set of units to another. atm – 1.0, mmHg – 760, cm H20 – 1034, kPa – 101.3, in Hg – 29.9, torr – 760, psia – 14.7. 1amt = 14.7 psia = 760 mmHg = 1034 cm H2O
Define gas and relate it to the molecular activity of gases. Gas – a gaseous substance existing above its
State Boyle's Law Boyles Law – basic relationship: if T is constant than P is proportional to 1/V to calculate changes in conditions then P1 x V1 = P2 x V2
Define vapor and relate it to the molecular activity of gases. Vapor – a gaseous substance existing below critical temperature.
Define critical pressure and relate it to the molecular activity of gases. Critical pressure – pressure required to convert a vapor back into a liquid at its critical temperature.
Define critical temperature and relate it to the molecular activity of gases. critical temperature - temperature where pressure can not change molecular structure.
Define critical point and relate it to the molecular activity of gases. Critical point – denotes the condition above which distinct liquid and gas phases do not exists.
State Charles's Law basic relationship: if P is constant than v is proportional to T to calculate changes in conditions than V1/T1 = V2/T2
State Guy-Lussac's Laws basic relationship: if V is constant than P is proportional to T to calculate changes in conditions than P1/T1 = P2/T2.
Created by: pasqls