1 answer

1. A 2.80 g lead weight, initially at 11.0 ∘C, is submerged in 8.19 g of...

Question:

1. A 2.80 g lead weight, initially at 11.0 ∘C, is submerged in 8.19 g of water at 53.0 ∘C in an insulated container.

What is the final temperature of both the weight and the water at thermal equilibrium?

2. It takes 45.0 J to raise the temperature of an 9.60 g piece of unknown metal from 13.0∘C to 24.6 ∘C. What is the specific heat for the metal?

3. The molar heat capacity of silver is 25.35 J/mol. ∘C. How much energy would it take to raise the temperature of 9.60 g of silver by 17.1 ∘C?

4. What is the specific heat of silver?


Answers

In the ist part , specific heat capacity of metal Pb is not given . Without this we cannot calculate final temperature. Thus i have supposed specific heat of Pb is x. I have solved rest of the part . You have to just plug in the value of x and you will be able to calculate final equilibrium temperature.Let T Final temperature = specific Heat of Pb Metal - х Let of Ilgoc 4.18 water- Heat specific (Heat gain by Pb) loose by watof Mass Molas Ag= 108 g/mol Moles of Aga moles 9.6 108 x OT X Moles Energy Requiseda Molas Heat capacity ] X 17.1 25.35 9.6 1

.

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