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PV = nRT
Donde
P = Presion (Atmosferas)
V = Volumen (Litros)
n = Numero de Moles
R = 0.0821 [(lt x atm)/(mol x °K)]
T = Temperatura (°K)
1) V = 84.4 ml; T = 38 °C; P = 9.28 torr
84.4 ml x (1 lt/1000 ml) = 0.0844 lt
T = 38 + 273 = 311°K
9.28 torr x (1 atm/760 torr) = 0.0122105 atm
n = ?
Despejo n en PV = nRT
n = PV/RT
n = [(0.0122105 atm)(0.0844 lt)]/[0.0821[(lt x atm)/(mol x °K)] x 311 °K]
n = 0.0000403 moles
2) P = ?; n = 40; V = 1000 ml T = 88°K
1000 ml = 1 lt
Despejo P de
PV = nRT
P = (nRT)/V
P = [(40 mol)x0.0821[(lt x atm)/(mol x °K)]x 88 °K]/[1 lt]
P = 288.992 atm
3) n = 10 moles; V = 300 ml; P = 180 torr; T = ?
300 ml x (1 lt/1000 ml) = 0.3 lt
1800 torr x (1 atm/760 torr) = 2.3684 atm
PV = nRT
T = PV/nR
T = [(2.3684 atm)(0.3 lt)]/[(10 mol)*(0.0821[(lt x atm)/(mol x °K)])]
T = 0.86543 °K
4) V = ?; n = 34 moles; P = 1.28 torr T = 100°C: T = 100 ° + 273° = 373°K
PV = nRT
V = (nRT)/P
1.28 torr x (1 atm/760 torr) = 0.0016842 atm
V = [(34 mol)(0.0821[(lt x atm)/(mol x °K)])(373 °K)]/[0.0016842 atm]
V = 618211.7326 litros