A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 5 years ago

2(H2O2)->2(H2O)+O2 H=-196kj calculate the value of q when 5g of H2O2 decompose at constant pressure, why the answer is -14.4kj?

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

    it's proportional. The equation says that 2 moles of H2O2 generates 196 kJ, 2 moles of H2O2 would weigh 68g (add up atomic masses) So if 68g releases 196 kJ, then less than 1/10 of that mass (5g) would produce less than 1/10 of the energy (14kJ)

  2. 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...


  • 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.