A23.5 g piece of aluminum metal is initially at 100.0°c. it is dropped into a coffee cup-calorimeter containing 130.0 g of water at a temperature of 23.0°c. after stirring, the final temperature of both copper and water is 26.0°c. assuming no heat losses, and that the specific heat capacity of water is 4.184 j/(g·°c), what is the molar heat capacity of aluminum, cm(al)?

The molar heat capacity of aluminum is

Explanation:

As we know that,  

        .................(1)

where,

q = heat absorbed or released

= mass of water = 130.0 g

= mass of aluminiunm = 23.5 g

= final temperature =

= temperature of water =

= temperature of aluminium =

= specific heat of water=

= specific heat of aluminium= ?

Now put all the given values in equation (1), we get

Molar mass of Aluminium = 27 g/mol

Thus molar heat capacity =

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everything changes!