Melting requires an input of energy to convert a solid to a liquid.
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Answer:
Acid solutions will be those which lights up a bulb when a circuit is connected through them.
Explanation:
Acid solutions such as HCl and HNO3 are polar in nature and permits the flow of electricity through them. Whereas non-polar solutions like ethanol and glucose solution will not allow the flow of electricity through them.
Therefore, when an electric circuit is completed by dipping the nails connected to a battery and a bulb into the different solutions, the lighting up of the bulb indicates which solutions are acids.
Explanation:
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Avogadro's law states that in one mole of a substance, there are 
molecules.
This means that in 1.55 moles, there are 
