Page 1 of 1

Mass Composition

Posted: Sat Nov 03, 2018 12:09 am
by katherinemurk 2B
Okay so there are many questions that give you the mass composition of each element in a compound and ask to find the empirical or molecular formula. The percentage of each element adds up to a 100%. What if they did not add up to 100%, how we would go about solving the problem??

Re: Mass Composition

Posted: Sat Nov 03, 2018 12:11 am
by Samantha Chang 2K
The mass composition percentage has to add up to 100%.

Re: Mass Composition

Posted: Sat Nov 03, 2018 1:45 am
by Chloe Likwong 2K
The mass composition has to add up to 100% or else you would not be able to do the problem.

Re: Mass Composition

Posted: Sat Nov 03, 2018 10:13 am
by Leela_Mohan3L
If the mass composition doesn't add up to 100% then that is an indication that there is another element present in the compound. Depending on the problem, you would be able to tell which element is missing. Ex: if the problem was asking you to find the molecular formula of a compound that was burned, the missing element might be oxygen.