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Stoichiometry

Stoichiometry
How much O₂ can be obtained from 90 kg of water?

80 kg
90 kg
32 kg
64 kg

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Stoichiometry
The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour

Is not dependent on the temperature
Is a function of the liquid phase composition
Measures the elevation in boiling point
Measures the depression in freezing point

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Stoichiometry
Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10⁻³ T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is

10.73 kJ
16.15 kJ
18.11 kJ
18.33 kJ

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Stoichiometry
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

Decreased with the increase in pressure
Unchanged by the pressure change
Increased with the increase in pressure
Independent of the temperature

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Stoichiometry
Percentage saturation of a vapor bearing gas is always __________ the relative saturation.

Higher than
Either A or B; depends on the system
Equal to
Smaller than

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Stoichiometry
Weight of 56 litres of ammonia at N.T.P. is __________ gm.

2.5
56
2800
42.5

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