A piece of solid aluminum at 15 degrees Celsius is immersed in 25.8 g of oxygen gas which is initial

Chemistry
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A piece of solid aluminum at 15 degrees Celsius is immersed in 25.8 g of oxygen gas which is initially at 42.2 degrees Celsius and the system is allowed to equilibrate. Given that the specific heat of solid aluminum is 0.908 J/K/g and the specific heat oxygen gas is 0.92 J/K/g, what is the mass of piece of solid aluminum if the final temperature is 28.9 degrees Celsius?

Jul 16th, 2015

Thank you for the opportunity to help you with your question!

Heat taken = heat given

Oxygen will give heat and aluminum will take heat.

m*0.908*(28.9-15) = 25.8*0.92*(42.2-28.9)

Hence, m = 25.8*0.92*(42.2-28.9)/0.908*(28.9-15)

                = 25.13 gms

Hence, mass of aluminum piece = 25.13 gms            Ans.


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Jul 16th, 2015

typing mistake. m = 25.013gms

Jul 16th, 2015

Thank you so much!!

Jul 16th, 2015

You are most welcome.

Jul 16th, 2015

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