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Stoichiometry

Stoichiometry
The quantity of heat required to evaporate 1 kg of a saturated liquid is called

Latent heat
1 Kcal
Specific heat
Sensible heat

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Stoichiometry
A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is

4576 J
19206 J
13728 J
12712 J

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Stoichiometry
The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.

Higher than
Lower than
Same as
Not related to

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Stoichiometry
One micron is equal to

Both B & C
10⁻⁴ cm
10⁻⁴ mm
10⁻⁶ m

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Stoichiometry
The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is

0.8
0.6
0.4
0.2

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Stoichiometry
The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies

XM ≥ 0.64
0.5 < XM < 0.64
XM < 0.5
XM = 0.5

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