How many moles of aluminum oxide (Al2O3) are in a sample with a mass of 204.0 g? The molar mass of aluminum oxide (Al2O3) is 102
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Answer : The initial temperature of system 2 is,
Explanation :
In this problem we assumed that the total energy of the combined systems remains constant.
The mass remains same.
where,
= heat capacity of system 1 = 19.9 J/mole.K
= heat capacity of system 2 = 28.2 J/mole.K
= final temperature of system =
= initial temperature of system 1 =
= initial temperature of system 2 = ?
Now put all the given values in the above formula, we get
Therefore, the initial temperature of system 2 is,