Turn on thread page Beta
    • Thread Starter
    Offline

    5
    ReputationRep:
    what mass of nitrogen is produced when 2.00 tonnes of ammonia gas decomposes
    2NH3 -> N2 + 3H2



    What mass of lead (II) oxide is produced when 0.400 moles of lead (II) nitrate decomposes.
    2Pv(NO3)2 -> 2PbOv+ 4 NO2 + O2
    Offline

    5
    ReputationRep:
    (Original post by 11ashh)
    what mass of nitrogen is produced when 2.00 tonnes of ammonia gas decomposes
    2NH3 -> N2 + 3H2



    What mass of lead (II) oxide is produced when 0.400 moles of lead (II) nitrate decomposes.
    2Pv(NO3)2 -> 2PbOv+ 4 NO2 + O2
    hmm nice yr1 stuff

    so try to get a table like this:
    2NH3 -> N2 + 3H2
    MASS 2
    MOLES
    MR 17 28 2

    and then you can start to fill out the tables one by one, using mass/Mr=moles and using molar ratios etc
    remember Mr is not affected by the number in FRONT of the symbol

    (havent done this stuff since summer so might be wrong in some places)

    answer to first one is 1.65t(again possibly wrong lol)
    Offline

    5
    ReputationRep:
    keep trying to get the table rightly aligned but doesnt work...
    Offline

    19
    ReputationRep:
    (Original post by just why?)
    keep trying to get the table rightly aligned but doesnt work...
    \LaTeX
 
 
 
The home of Results and Clearing

2,253

people online now

1,567,000

students helped last year

University open days

  1. SAE Institute
    Animation, Audio, Film, Games, Music, Business, Web Further education
    Thu, 16 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Fri, 17 Aug '18
  3. University of Bolton
    Undergraduate Open Day Undergraduate
    Fri, 17 Aug '18
Poll
Do you want your parents to be with you when you collect your A-level results?

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.