Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    0
    ReputationRep:
    can someone check to see if my answers are right:

    What is the amount, in moles, of:
    q) 6.41 g of SO2 molecules
    a) 0.1 mol

    q) 10g of sodium hydroxide
    a) 0.25 mol

    What is the mass of:
    q) 0.01 mol of NH4Cl
    a) 0.535g

    q) 0.125 mol of sulphate ions, SO4 2-
    a) 4g?
    Offline

    19
    ReputationRep:
    (Original post by Mimiiil)
    can someone check to see if my answers are right:

    What is the amount, in moles, of:
    q) 6.41 g of SO2 molecules
    a) 0.1 mol

    q) 10g of sodium hydroxide
    a) 0.25 mol

    What is the mass of:
    q) 0.01 mol of NH4Cl
    a) 0.535g

    q) 0.125 mol of sulphate ions, SO4 2-
    a) 4g?
    No idea if they're right but your significant figures are way off.
    • Thread Starter
    Offline

    0
    ReputationRep:
    can someone check to see if my answers are right:

    What is the amount, in moles, of:
    q) 6.41 g of SO2 molecules
    a) 0.1 mol

    q) 10g of sodium hydroxide
    a) 0.25 mol

    What is the mass of:
    q) 0.01 mol of NH4Cl
    a) 0.535g

    q) 0.125 mol of sulphate ions, SO4 2-
    a) 4g?
    • Welcome Squad
    Offline

    3
    ReputationRep:
    Welcome Squad
    Haha i dont have a periodic table on me, but as long as you used the mass/molar mass=amount of moles formula, you should be fine
    • Study Helper
    Offline

    19
    ReputationRep:
    Study Helper
    (Original post by Mimiiil)
    can someone check to see if my answers are right:

    What is the amount, in moles, of:
    q) 6.41 g of SO2 molecules
    a) 0.1 mol

    q) 10g of sodium hydroxide
    a) 0.25 mol

    What is the mass of:
    q) 0.01 mol of NH4Cl
    a) 0.535g

    q) 0.125 mol of sulphate ions, SO4 2-
    a) 4g?
    They're all right apart from the last one. The fact that it's an ion is irrelevant - just do it exactly like the previous question and you'll be fine. You can immediately tell it's wrong since sulfur has a RAM of 32.1 and an eighth of that is already bigger than 4g.
    • Community Assistant
    • Study Helper
    Offline

    15
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by Mimiiil)
    can someone check to see if my answers are right:

    What is the amount, in moles, of:
    q) 6.41 g of SO2 molecules
    a) 0.1 mol

    q) 10g of sodium hydroxide
    a) 0.25 mol

    What is the mass of:
    q) 0.01 mol of NH4Cl
    a) 0.535g

    q) 0.125 mol of sulphate ions, SO4 2-
    a) 4g?
    Please don't double post the same questions ...
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?

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.