Hey! Sign in to get help with your study questionsNew here? Join for free to post

Mixed MC questions

Announcements Posted on
Would YOU be put off a uni with a high crime rate? First 50 to have their say get a £5 Amazon voucher! 27-10-2016
    • Thread Starter

    It's me again!

    I have attached a Word document of some questions I am stuck on and wondered if anybody could help me :rolleyes:

    thank you :cool:
    Attached Files
  1. File Type: docx Stuck questions.docx (315.6 KB, 19 views)

    (Original post by OpenArms)
    It's me again!

    I have attached a Word document of some questions I am stuck on and wondered if anybody could help me :rolleyes:

    thank you :cool:
    Qs 10. Well ionisation requires an input of energy shown by the positive values in the table. The equation shows electron gain, so whatever value you need, it's going to be negative. In going from Al 3+ to Al 1+ you're doing the opposite so you want the negative of the sum of the third and second ionisation energies.

    Qs 14. If it doesn't conduct electricity when solid then it's obviously not magnesium. If it forms a gaseous oxide then it's not silicon, SiO2 is basically glass.
    As for which of nitrogen and sulfur are solids at room temperature I think that you can figure that one out.

    Qs 39. Deduce the oxidation states of the individual elements and then see what gets oxidised/reduced

    Qs 37. Combine the two equations in a particular ratio so everything balances

Write a reply…


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: May 11, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

I want...

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.