3- Air at 25°C and 100 kPa at a relative humidity of 75 percent. The parti pressure of water vapour a) p. = 4.35 kPa is: Take (Ps@25-c-3.168 kPa) b) p,= 3.45 kPa c) pv=2.38 kPa.

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Chapter1: Chemical Foundations
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3- Air at 25°C and 100 kPa at a relative humidity of 75 percent. The partial
pressure of water vapour is: Take (Ps@25c-3.168 kPa)
b) p. = 3.45 kPa
a) p. = 4.35 kPa
c) pv=2.38 kPa.
4- Find the specific humidity of Question3
a)w=0.0152kgy/kgd.a
b)w=0.0162kgv/kgd.a
c)w=0.0172kgv/kgd.a
5- Ethanol C₂H5OH is burned with dry air for one mole of fuel. Find the air-fuel
ratio, The stoichiometric equation is
C₂H5OH+30₂ + (3 x 3.76N2)→ 2C0₂ + 3H₂O + (3 x 3.76N₂)
a)A/F= 9.96 kg air/kg fuel b)A/F= 8.96 kg air/kg fuel c)A/F= 7.96 kg air/kg fuel
Transcribed Image Text:3- Air at 25°C and 100 kPa at a relative humidity of 75 percent. The partial pressure of water vapour is: Take (Ps@25c-3.168 kPa) b) p. = 3.45 kPa a) p. = 4.35 kPa c) pv=2.38 kPa. 4- Find the specific humidity of Question3 a)w=0.0152kgy/kgd.a b)w=0.0162kgv/kgd.a c)w=0.0172kgv/kgd.a 5- Ethanol C₂H5OH is burned with dry air for one mole of fuel. Find the air-fuel ratio, The stoichiometric equation is C₂H5OH+30₂ + (3 x 3.76N2)→ 2C0₂ + 3H₂O + (3 x 3.76N₂) a)A/F= 9.96 kg air/kg fuel b)A/F= 8.96 kg air/kg fuel c)A/F= 7.96 kg air/kg fuel
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