[vbpro78]

I am sure that this will be easy for some of you, but I am having a hard time finding the relation between Moles, Avagadro's Number, etc to find the solution to the following question:

     "When 125.0g of a compound of C and O is decomposed it yields 53.6g of C. How many grams of O does it yield?"

I am sure its not as simple as subtracting the grams of C from the total grams of the compound.   Thanks for the *delete me*!

[Borek]

I am sure its not as simple as subtracting the grams of C from the total grams of the compound.

And you are wrong

It is one of the real carbon oxides, try to find its formula to be sure.

[vbpro78]

This is not the case for all coupounds (subtracting know yield from total amount).  What are the steps I would need to take to find this value for another compound?  For example:  Given 100g of C12H22O11, how many grams of H?

[enahs]

This is not the case for all coupounds (subtracting know yield from total amount).  What are the steps I would need to take to find this value for another compound?  For example:  Given 100g of C12H22O11, how many grams of H?

What is the molecular weight of C12H22O11, what is the percentage by weight of H?

100 g * that number.