Stoichiometry If 1.5 moles of oxygen combines with aluminium to form Al2O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm. 5.4 54 2.7 27 5.4 54 2.7 27 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules Are above the inversion temperature Exert no attractive force on each other Collide without loss of energy Do work equal to loss in kinetic energy Are above the inversion temperature Exert no attractive force on each other Collide without loss of energy Do work equal to loss in kinetic energy ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A vessel of volume 1000 m³ contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately 20 17 34 25 20 17 34 25 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Atmospheric pressure corresponds to a hydrostatic head of 34 ft ofH₂O 13.6 cms of Hg 13.6 metres of Hg 1 metre of H₂O 34 ft ofH₂O 13.6 cms of Hg 13.6 metres of Hg 1 metre of H₂O ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 1 gm mole of methane (CH₄) contains 4 gm atoms of hydrogen 3.01 x 1023 molecules of methane 6.02 x 1023 atoms of hydrogen 3 gms of carbon 4 gm atoms of hydrogen 3.01 x 1023 molecules of methane 6.02 x 1023 atoms of hydrogen 3 gms of carbon ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is 380 760 630 880 380 760 630 880 ANSWER DOWNLOAD EXAMIANS APP
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