Which has more thermal energy, 1 kg of aluminum at 20°c or 1 kg of gold at 20°c

here since temperature and mass is same so aluminium must have more thermal energy than gold

Explanation:

As we know that thermal energy stored inside the matter is given as

now we know that

m = mass of the given substance

c = molar specific heat capacity

= temperature with respect to zero degree C

now we know that

= molar specific heat capacity of aluminium

= molar specific heat capacity of gold

So here since temperature and mass is same so aluminium must have more thermal energy than gold

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