D. Chemical to thermal and electromagnetic
In a phase diagram, the point at which the solid, liquid, and gas coexist simultaneously is called the TRIPLE POINT. There is a specified pressure and temperature at which the substance can exist in equilibrium with these three phases being present.
The initial state of the compound Br2 is liquid. The final
state is then solid. We know for certain that the liquid state has higher energy
as compared to solid state. Due to this fact, Br2 must release energy to be in
solid form. Therefore, the change in enthalpy is:
ΔH = -7.4 kcal/nil
Celsius to Kelvin conversion
formula
<span>The temperature T in
Kelvin (K) is equal to the temperature T in
degrees Celsius (°C) plus 273.15:</span>
T(K) <span>= T(°C) + 273.15</span>
So
to convert the boiling point of cyclopropane from degrees Celsius to kelvin:
T(K) <span>= T(°C) + 273.15</span>
T(K) <span>= -33 +
273.15</span>
T(K) <span>= 240.15 K</span>
<span> </span>
