In the compound ${}^1\text{CH}_2 = {}^2\text{CH} - {}^3\text{CH}_2 - {}^4\text{CH}_2 - {}^5\text{C} \equiv {}^6\text{CH}$, The $C_2 - C_3$ bond is of type

A gas occupies a volume of $0.35$ dm$^3$ at $290$ K and $2$ atm. Pressure. Calculate the volume of gas at STP.

The enthalpy of combustion of cyclohexane, cyclohexene and $\text{H}_2$ are respectively $-3920, -3800$ and $-241$ KJ mol$^{-1}$. The enthalpy of hydrogenation of cyclohexene is

A gas expands from a volume of $1$ dm$^3$ to $1.25$ dm$^3$ under a pressure of $1$ bar. Find the change in internal energy if $150$ J of heat is supplied to the system.