Thermodynamics ...

Under which of the following conditions is the relation, $$\Delta H=\Delta E+P\Delta V$$ valid for a system:

The heat capacity of 2.0 moles of He gas at constant temperature is (in cal/mol/K)

For the reaction, $$2A(g)+B(g)\rightarrow 2D(g),\Delta {U}^{o}=-10.5kJ$$ and $$\Delta {S}^{o}=-44.10J{K}^{-1}$$. Calculate $$\Delta {G}^{o}$$ for the reaction and predict whether the reaction may occur spontaneously:

Evaporation of water is 

At $$27C$$ the reaction,
$${ C }_{ 6 }{ { H }_{ 6 } }_{ { (l) } }+\frac { 15 }{ 2 } { { O }_{ 2 } }_{ (g) }\rightarrow { { 6CO }_{ 2 } }_{ (g) }+{ { 3H }_{ 2 }O }_{ (l) }$$
 proceeds spontaneously because the magnitude of?

For the given reaction
$$H_{2}(g)+S(s)\longrightarrow H_{2}S(g);\ \Delta H_{T}=100\ kJ/mol$$ and $$\Delta S_{T}=400\ J/mol/K$$
Temperature at which above reaction occurs reversibly is (Assuming $$\Delta H_{T}$$ and $$\Delta S_{T}$$ are independent of temperature)

A gas occupies $$2L$$ at S.T.P. It is provided with $$300 Joule$$ of heat so that its volume becomes $$2.5 litre$$ at a pressure of $$1 atm$$. The value of $$\Delta U$$(Change in internal energy) of process is :- 

In an isobaric process ratio of heat supplied to the system, to workdone by the system for diatomic gas is:

The values of $$\Delta H$$ and $$\Delta S$$  for the reaction, $${ C }_{ \left( graphite \right)  }+{ CO }_{ { 2 }_{ \left( g \right)  } }\longrightarrow { 2CO }_{ \left( g \right)  }$$  are $$170 \ kJ$$ and $$170 \ JK^{-1}$$, respectively. This reaction will be spontaneous at :-

Which of the polymer has the weakest intermolecular force of attraction?