Turn on thread page Beta
    • Thread Starter
    Offline

    16
    ReputationRep:
    Hey all, I absolutely love chemistry and am taking my GCSE in it soon. However, the one thing that I really do struggle with sometimes is mole calculations. I can easily do the basic mole calculations and calculations that factor in a ratio, but I really did not understand this question that I came across today. Please help!

    I managed to get an A* overall in the paper, but I feel as though moles calculations will be what ultimately lets me down.

    I have attached photos of the question and also my workings out, please don’t laugh at them. I managed to get one mark out of three, but ideally I would be wanting to get three out of three.

    Thanks!

    Attachment 703572

    Attachment 703574
    Posted on the TSR App. Download from Apple or Google Play
    • Community Assistant
    • Study Helper
    Offline

    17
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by ?Hannah?)
    Hey all, I absolutely love chemistry and am taking my GCSE in it soon. However, the one thing that I really do struggle with sometimes is mole calculations. I can easily do the basic mole calculations and calculations that factor in a ratio, but I really did not understand this question that I came across today. Please help!

    I managed to get an A* overall in the paper, but I feel as though moles calculations will be what ultimately lets me down.

    I have attached photos of the question and also my workings out, please don’t laugh at them. I managed to get one mark out of three, but ideally I would be wanting to get three out of three.

    Thanks!

    Attachment 703572

    Attachment 703574
    Attachment not found ...
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by charco)
    Attachment not found ...
    oh no, that’s really strange! i posted this via the student room app. i will try and post the attachments again using the web version
    • Thread Starter
    Offline

    16
    ReputationRep:
    Name:  06535B60-BB2E-434D-87A1-4C50251EBCEA.jpeg
Views: 27
Size:  162.7 KB
    Attached Images
     
    • Community Assistant
    • Study Helper
    Offline

    17
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by ?Hannah?)
    Name:  06535B60-BB2E-434D-87A1-4C50251EBCEA.jpeg
Views: 27
Size:  162.7 KB
    Why have you written "ratio=1:2" ?
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: November 14, 2017

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?

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

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