Stoichiometry
The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be be

0.05
0.2
0.1818
0.1

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Stoichiometry
The heat capacity of a substance is

Greater for liquid state than for solid state
Higher for solid state than for liquid state
Lower for liquid state than for gaseous state
Equal for solid and liquid states below melting point

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