A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

It takes 2.52 × 10^5 J of heat to melt 4.00 kg of a substance. According to the table (attached inside!), what is the substance? copper, iron, silver, or gold **not sure! thank you:)

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  2. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    we have to find the heat capacity

  3. souvik
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well...find the amount of heat needed to melt 1 kg of substance

  4. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so we have to compute this: \[\Large C = \frac{Q}{m}\]

  5. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    where Q=2.52 × 10^5 J and m= 4Kg

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay! so 2.52 * 10^5 / 4 = 63000 ?

  7. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok!

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so that means 6.3 * 10^4? so our substance is gold?

  9. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that's right!

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yay!! thank you:)

  11. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thank you!! :)

  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.