Question 2
Describe the energy in coal and the way in which it’s converted to electrical energy.

Its rich carbon content gives coal most of its energy content. When coal is burned in the presence of air or oxygen, heat energy is released. This energy can then be converted to other forms of useful energy. Coal-fired plants produce electricity by burning coal in a boiler to produce steam. The steam produced, under tremendous pressure, flows into a turbine, which spins a generator to create electricity.

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answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.