10. A student wants to determine the identity of a piece of silvery metal of unknown composition. The student heats the

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10 A Student Wants To Determine The Identity Of A Piece Of Silvery Metal Of Unknown Composition The Student Heats The 1 (60.41 KiB) Viewed 27 times

10. A student wants to determine the identity of a piece of silvery metal of unknown composition. The student heats the 34.0 g piece of metal to 98.7°C, then drops it into 60.0 mL of water initially at 24.5 °C. After waiting, the final temperature of the water settles at 28.7 °C. Use 4.184 J/g C as the specific heat capacity of water. From the following metals, what is your best guess for the identity of the unknown metal? a. Aluminum (specific heat capacity of 0.921 J/gºC) b. Iron (specific heat capacity of 0.449 J/gºC) c. Stainless steel (specific heat capacity of 0.502 J/g C) d. Silver (specific heat capacity of 0.235 J/g C) e. None of these metals 11. A 63.0 g block of iron that has an initial temperature of 355 C and a 35 g block of gold that has an initial temperature of 47 °C are brought into contact with one another. Assuming no heat is lost to the surroundings, what will be the final temperature when the two metals reach thermal equilibrium? (The specific heat capacity of iron is 0.449 J/g °C and the specific heat of gold is 0.128 J/g C) 12. A student wants to determine the identity of an unknown metal. The students heat the 30.1 g chunk metal to 100.0 °C, then drops it into 46.1 g of water at 26.0 °C. After waiting, the final temperature of the water is 35.3 C. (Use 4.184 J/gºC as the specific heat of water). From the following metals, what is the best guess for the identity of the unknown metal? a. Aluminum (specific heat capacity of 0.921 J/g•°C) b. Iron (specific heat capacity of 0.449 J/g"C) c. Stainless steel (specific heat capacity of 0.502 J/g C) d. Silver (specific heat capacity of 0.235 J'g'C) e. None of these metals