A certain type of ship has two tanks in its engine. Each tank contains a different type of fuel. When the engine turns on, the s
ame amount of energy is transferred out of both fuels as shown in the diagram below. Why did fuel 1 change phase, but fuel 2 stayed the same? Explain what happened to the molecules of both fuels. Fuel1: Has phase change because the first diagram has the engine off and has only gas in the container but then the phase changed because the second part of the diagram the engine is now on.Know there is liquid in the fuel 2. The energy from each fuel changes from gas to liquid so there is almost like evaporation but backwards. So it’s from liquid to gas.
Fuel 1 changed phase because the energy drawn from it dropped its temperature below the transitional temperature that causes a phase change, fuel 2 still has its temperature well above the transitional temperature required to change phase.
Explanation:
For a substance to change phase, a transitional temperature has to be reached. This is because, the temperature of substances generally indicates the average kinetic energy of its molecules. An increase in energy input to the system will result in a change to a more mobile phase like from solid to a liquid state or from a liquid state to a gaseous state state, while taking energy from the system will cause a transition to a less mobile phase like gas to liquid or liquid to solid state.
In 1970, the Supreme Court raised the standard of proof necessary in juvenile court to that required in adult criminal court. In in re Winship (397 U.S. 358), the Court required that juveniles charged with criminal acts be proved “beyond a reasonable doubt” to have committed them.
