Question

(04.05 MC) What type of energy transformation takes place when carbon is cycled in a coal-based power plant? Chemical energy to chemical energy Chemical energy to electrical energy Mechanical energy to chemical energy Mechanical energy to mechanical energy

Answer 1

Answer;

Chemical energy to electrical energy

Explanation;

• When coal is burned, chemical energy of coal is converted into heat energy which is used to boil water, which in turn produces steam.
• Steam released from the boiler powers an engine known as a turbine, transforming heat energy from burning coal into mechanical energy that spins the turbine engine.
• The kinetic energy of the spinning turbine does work in a generator, a machine that turns this work into electric energy.

Answer 2

The answer is; Chemical energy to electrical energy

When coal is burned, the breaking of chemical bonds in the coal is an exergonic process. The heat from the chemical bonds is used to heat water that drives turbines. This is a conversion of the chemical energy to mechanical energy. The turbines run a dynamo which converts the mechanical energy to electrical energy.