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Stoichiometry

Stoichiometry
__________ fuels require the maximum percentage of 'excess air' for complete combustion.

Liquid
Nuclear
Gaseous
Solid

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Stoichiometry
Cp is expressed in S.I. unit as

0°K
J/kg.°K
W/m². °C
W/m. °K

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Stoichiometry
A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

140
350
485
345

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Stoichiometry
Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).

°API = 200(G - 1)
°API = 145 - (145/G)
°API = (140/G) - 130
°API = (141.5/G) - 131.5

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Stoichiometry
Enthalpy of formation of NH₃ is - 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH₃ → N₂ + 3H₂, is equal to __________ kJ/kg. mole.

92
46
-92
-23

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Stoichiometry
Osmotic pressure of the solution can be increased by

Decreasing its temperature
Increasing the volume of the vessel containing the solution
Diluting the solution
None of these

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