Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    Please help me with this:
    2.07g of element Z with bromine to form 3.67g of a compound with an empirical formula ZBr2. Find the RAM of element Z.
    Offline

    9
    ReputationRep:
    You know the molar mass of the Br2 ( by calculation from the periodic table). And you know the relative proportions of Br2 and Z in the compound.
    The RAM of Z must be mass Br2 x 2.07 / (3.67-2.07)
    Offline

    9
    ReputationRep:
    Basically you have an algebra question with very little chemical knowledge required.
    Chemically you only need to understabd the formula, and that you can get the mass of Br from the periodic table.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 18, 2017

1,419

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process

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.