1 / 5

Chemical Systems & Heat

Chemical Systems & Heat. Unit 10 Review. Calculate the final temp. 14.0 g of metal at 24.0 C has 250 joules of heat added to it. The metal’s specific heat is 0.105 J/ gC . What is its final temperature? q= mc Δ T q = m c T F – T I T F = 250 J / (14.0g)(0.105 J/g ⁰C) + 24 ⁰C = 28 ⁰C.

tangia
Download Presentation

Chemical Systems & Heat

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemical Systems & Heat Unit 10 Review

  2. Calculate the final temp • 14.0 g of metal at 24.0 C has 250 joules of heat added to it. The metal’s specific heat is 0.105 J/gC. What is its final temperature? • q= mc ΔT • q = m c TF – TI • TF = 250 J / (14.0g)(0.105 J/g ⁰C) + 24 ⁰C • = 28 ⁰C

  3. What will the final temperature be? • 50.0 g iron with an initial temperature of 225⁰C and 50.0g of gold with an initial temperature of 25.0⁰Care brought into contact with one another. No heat is lost to the surroudings. What will the temperature be when the two metals reach thermal equilibrium? Specific heat iron = 0.449 J/g⁰C • Specific heat gold = 0.128 J/g⁰C

  4. Specific heat = ? • 100.0 g of nickel @ 150⁰C was placed in 1.00 L of water at 25.0 ⁰C. The final temperature of the water was 26.3⁰C. What is the specific heat of nickel? • 0.44 J/g⁰C

  5. Final temperature of the water? • A 25.0 g piece of iron @ 398 K is placed in a styrofoam coffee cup containing 25.0 mL of water @ 298 K. No heat is lost to the cup or the surroundings. What will the final temperature of the water be? • Specific heat of iron = 0.499 J/g⁰C • 34.6 ⁰C

More Related