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Conversiones de Unidades Químicas: Longitud, Masa, Presión, Cantidad, Volumen, Fuerza, Ene, Apuntes de Termodinámica

Trae conversiones termodinámicas y físicas

Tipo: Apuntes

2023/2024

Subido el 11/09/2024

-alejandro
-alejandro 🇲🇽

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Facultad de Química, UNAM Departamento de Fisicoquímica
Elaboró: Dr. Gerardo Omar Hernández Segura
TABLA DE CONVERSIONES DE UNIDADES
LONGITUD
1 m = 10-3 km = 10 dm = 100 cm = 1000 mm
1 m = 3.2808 ft = 39.3701 in
1 cm = 10 mm = 0.1 dm = 10-2 m = 0.393701 in = 0.032808 ft
1 mm = 0.1 cm = 0.01 dm = 10-3 m
1 nm = 1000 pm = 10 Å = 10-3 μm = 10-6 mm = 10-7 cm = 10-9 m
1 μm (1 micra) = 103 nm = 104 Å = 106 pm = 10-3 mm = 10-4 cm = 10-6 m
1 Å (1 Angstrom) = 10-10 m = 10-8 cm = 10-7 mm = 10-4 μm = 0.1 nm = 100 pm
1 pm = 10-6 μm = 10-3 nm = 0.01 Å = 10-9 mm = 10-10 cm = 10-12 m
1 in = 25.4 mm = 2.54 cm = 0.0254 m
1 ft = 30.48 cm = 12 in = 0.3048 m = 3.048 x 10-4 km
1 yd = 0.91459841 m
1 mi = 1.609 km = 1609.34 m = 5280 ft
NOTA:
in: inch (pulgada) plg
ft: feet (pies)
yd: yard (yarda)
mi: mille (milla)
MASA
1 kg = 1000 g = 2.2046 lb
1 g = 10-3 kg = 1000 mg = 106 μg = 109 ng
1 lb = 0.454 kg = 454 g = 16 oz
1 ton métrica = 1000 kg = 2205 lb
1 ton corta = 2000 lb
1 ton larga = 2240 lb
1 oz = 28.35 g = 0.02835 kg
1 slug = 32.1739 lb
PRESIÓN
1 Pa = 1 N/m2
1 GPa = 109 Pa = 103 MPa = 106 kPa
1 MPa = 106 Pa = 103 kPa = 10-3 GPa
1 kPa = 1000 Pa = 10 hPa = 10-3 MPa
1 hPa = 1 mbar = 100 Pa = 0.10 kPa
1 bar = 1000 mbar = 105 Pa = 100 kPa = 0.1 MPa = 10-4 GPa = 0.986923 atm = 14.5038 psia = 1.0197 kgf/cm2
= 750.062 mm Hg = 75.0062 cm Hg = 750.062 torr = 401.48 in H2O = 108 barias
1 atm = 1.01325 bar = 101.325 kPa = 0.101325 MPa = 1.01325 x 10-4 GPa = 101325 Pa = 14.7 lbf/in2 (psi)
= 1.0332 kgf/cm2 = 76 cm Hg = 760 mm Hg = 406.8 in H2O = 33.9 ft H2O
= 1.05 x 104 mm H2O = 1033.6 cm H2O = 1013250 dina/cm2 = 760 torr = 29.9212 in Hg
1 mm Hg = 13.6 mm H2O = 1.33 mbar = 133.322 Pa = 1 torr = 0.1 cm Hg = 0.03937 in Hg
1 lbf/in2 (psi) = 68948 dina/cm2 = 703.1 kgf/m2 = 6894.8 Pa = 0.0680 atm = 2.036 in Hg = 0.0689 bar
1 cm Hg = 13.6 cm H2O
NOTA:
psi: pounds per squared inch (libras fuerza sobre pulgada cuadrada)
psia: pounds per squared inch absolute (libras fuerza sobre pulgada cuadrada absolutas)
psig: pounds per squared inch gauge (libras fuerza sobre pulgada cuadrada manométricas)
torr: torricelli
CANTIDAD DE SUSTANCIA
1 mol = 103 mmol = 106 μmol = 10-3 kmol
1 kmol (kgmol) = 1000 mol = 106 mmol = 109 μmol = 2.20463 lbmol
1 lbmol = 454 mol = 453 590 mmol
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TABLA DE CONVERSIONES DE UNIDADES

LONGITUD

1 m = 10-3^ km = 10 dm = 100 cm = 1000 mm 1 m = 3.2808 ft = 39.3701 in 1 cm = 10 mm = 0.1 dm = 10-2^ m = 0.393701 in = 0.032808 ft 1 mm = 0.1 cm = 0.01 dm = 10-3^ m 1 nm = 1000 pm = 10 Å = 10-3^ μm = 10 -6^ mm = 10-7^ cm = 10-9^ m 1 μm (1 micra) = 10^3 nm = 10^4 Å = 10^6 pm = 10-3^ mm = 10-4^ cm = 10-6^ m 1 Å (1 Angstrom) = 10-10^ m = 10-8^ cm = 10-7^ mm = 10-4^ μm = 0.1 nm = 100 pm 1 pm = 10-6^ μm = 10-3^ nm = 0.01 Å = 10-9^ mm = 10-10^ cm = 10-12^ m 1 in = 25.4 mm = 2.54 cm = 0.0254 m 1 ft = 30.48 cm = 12 in = 0.3048 m = 3.048 x 10-4^ km 1 yd = 0.91459841 m 1 mi = 1.609 km = 1609.34 m = 5280 ft NOTA: in: inch (pulgada) plg ft: feet (pies) yd: yard (yarda) mi: mille (milla)

MASA

1 kg = 1000 g = 2.2046 lb 1 g = 10-3^ kg = 1000 mg = 10^6 μg = 10^9 ng 1 lb = 0.454 kg = 454 g = 16 oz 1 ton métrica = 1000 kg = 2205 lb 1 ton corta = 2000 lb 1 ton larga = 2240 lb 1 oz = 28.35 g = 0.02835 kg 1 slug = 32.1739 lb

PRESIÓN

1 Pa = 1 N/m^2 1 GPa = 10^9 Pa = 10^3 MPa = 10^6 kPa 1 MPa = 10^6 Pa = 10^3 kPa = 10-3^ GPa 1 kPa = 1000 Pa = 10 hPa = 10-3^ MPa 1 hPa = 1 mbar = 100 Pa = 0.10 kPa 1 bar = 1000 mbar = 10^5 Pa = 100 kPa = 0.1 MPa = 10-4^ GPa = 0.986923 atm = 14.5038 psia = 1.0197 kgf/cm^2 = 750.062 mm Hg = 75.0062 cm Hg = 750.062 torr = 401.48 in H 2 O = 10^8 barias 1 atm = 1.01325 bar = 101.325 kPa = 0.101325 MPa = 1.01325 x 10-4^ GPa = 101325 Pa = 14.7 lbf/in^2 (psi) = 1.0332 kgf/cm^2 = 76 cm Hg = 760 mm Hg = 406.8 in H 2 O = 33.9 ft H 2 O = 1.05 x 10^4 mm H 2 O = 1033.6 cm H 2 O = 1013250 dina/cm^2 = 760 torr = 29.9212 in Hg 1 mm Hg = 13.6 mm H 2 O = 1.33 mbar = 133.322 Pa = 1 torr = 0.1 cm Hg = 0.03937 in Hg 1 lbf/in^2 (psi) = 68948 dina/cm^2 = 703.1 kgf/m^2 = 6894.8 Pa = 0.0680 atm = 2.036 in Hg = 0.0689 bar 1 cm Hg = 13.6 cm H 2 O NOTA: psi: pounds per squared inch (libras fuerza sobre pulgada cuadrada) psia: pounds per squared inch absolute (libras fuerza sobre pulgada cuadrada absolutas) psig: pounds per squared inch gauge (libras fuerza sobre pulgada cuadrada manométricas) torr: torricelli

CANTIDAD DE SUSTANCIA

1 mol = 10^3 mmol = 10^6 μmol = 10 -^3 kmol 1 kmol (kgmol) = 1000 mol = 10^6 mmol = 10^9 μmol = 2.20463 lbmol 1 lbmol = 454 mol = 453 590 mmol

VOLUMEN

1 m^3 = 1000 L = 10^3 dm^3 = 10^6 cm^3 = 35.3147 ft^3 = 264.17 gal = 61023.7 in^3 1 in^3 = 16.39 cm^3 1 ft^3 = 28.3168 L = 0.02831 m^3 = 28316.8 cm^3 1 gal (UK) = 1.201 gal (US) = 4.546 L = 0.004546 m^3 = 277.42 in^3 1 gal (US) = 0.8326 gal (UK) = 3.785 L = 0.003785 m^3 = 230.97 in^3 1 L = 1 dm^3 = 1000 cm^3 = 1000 mL 1 cm^3 = 1 mL 1 dL = 0.1 L = 10 cL = 100 cm^3 = 100 mL

FUERZA

1 N = 1 kg∙m/s^2 1 dina = 1 g∙cm/s^2 1 lbf = 32.174 lb∙ft/s^2 = 4.4482 N 1 kgf =1000 gf = 9.807 kg∙m/s^2 = 9.807 N

ENERGÍA

1 J = 1 kg∙m^2 /s^2 = 1 N∙m = 1 Pa∙m^3 = 1 W∙s 1 erg = 1 g∙cm^2 /s^2 = 1 dina∙cm 1 J = 0.239 cal = 10^7 erg = 1 N∙m = 9.48 x 10-^4 Btu = 9.87 x 10-^3 L∙atm = 2.778 x 10-^7 kW∙h = 6.2415 0 x 10^18 eV 1 kJ = 1000 J = 10^3 Pa∙m^3 = 10^4 bar∙cm^3 = 239.01 cal = 0.94845 Btu = 737.562 lbf∙ft = 1.0197 x 10^4 kgf∙cm = 9.86923 x 10^3 atm∙cm^3 1 Btu = 1055.04 J = 252 cal = 778.161 lbf∙ft = 10.412 L∙atm 1 cal = 4.184 J = 3.968 x 10-3^ Btu = 4.19 x 10^7 erg = 4.13 x 10-2^ L∙atm = 3.086 lbf∙ft 1 L∙atm = 24.2 cal = 1.01 x 10^9 erg = 101 J = 0.096 Btu = 74.735 lbf∙ft 0.082 L∙atm = 1.987 cal = 8.314 J 1 kW∙h = 3.6 x 10^6 J = 8.6042 x 10^5 cal = 3414.36 Btu 1 eV = 1.60218 x 10-19^ J NOTA: Btu: British thermal unit (unidad térmica británica)

POTENCIA

1 W = 1 J/s = 1 N m/s = 1 kg∙m^2 /s^3 1 W = 0.23901 cal/s = 0.8064 kcal/h = 0.7376 ft lbf/s = 9.486 x 10-4^ Btu/s = 3.4144 Btu/h = 1.341 x 10-3^ hp 1 kW = 1000 W NOTA: hp: horse power (caballo de fuerza)

TIEMPO

1 año = 365 días = 12 meses = 48 semanas 1 día = 24 h = 1440 min = 86400 s 1 h = 60 min = 3600 s

RELACIONES DE ESCALAS TERMOMÉTRICAS

(º ) (º ) 32 ( ) 273.15 (º ) 491. 100 180 100 180 t C t FT KT R    

RELACIONES DE DIFERENCIAS DE TEMPERATURAS

 t C  t F  T K  T R

Ejemplo: El factor unitario para convertir de mm Hg a Pa es

101325 Pa 760 mm Hg      