Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Orelov

  • 2 years ago

1) A 64 u sample of a compound containing carbon and hydrogen is heated in the presence of oxygen. 144 u of water and 176 u of carbon dioxide are produced. The mass of the molecule is 16 u. Find the empirical and molecular formula. 2) A 17.471 g sample of a compound containing carbon, hydrogen, and oxygen is heated in the presence of oxygen. 10.477 g of water and 25.612 g of carbon dioxide are produced. The molar mass of the molecule is 90.079 g/mol. Find the empirical and molecular formula.

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

    What have you done so far?

  2. Orelov
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Honestly nothing because I have no idea what I'm doing....

  3. Preetha
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    First you calculate the moles of C present in CO2 and the moles of H in H2O

  4. Orelov
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    CO2 = 3.9991365500592mol H2O = 7.993214648899199mol Are those right?

  5. Orelov
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Would I round them?

  6. Preetha
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Did you do 176 x 10-12 g x 1 mol CO2/44 g

  7. Orelov
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I came out to 39.7272...

  8. Orelov
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait-- I think I know what I'm doing now, but thank you!

  9. Preetha
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok, in this problem you need to round it to 2 sig figs because you have the number 16 in the problem.

  10. 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.