Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: k42490 on September 06, 2007, 08:36:55 PM
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you have 2 distinct gaseous compunds made from elements x and y:
compund 1: 30.43%x, 69.57%y
compund 2: 63.64%x, 36.36%y
when you react gas x with y, you get:
1 volume gas x + 2 volumes gas y -> 2 volumes compund 1
2 volumes gas x + 1 volume gas y -> 2 volumes compund 2
Assume simplest possible formula and determine relative atomic masses of element x and element y.
i don't understand how to incorporate the percents.
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I assume you should read the % as mass%
So then you read it as follows:
compound 1 : 1 gram comp. 1 is built up by 0.3043 grams X and 0.6957 grams Y
similar for compound 2
you then have mole fractions and mass fractions of X and Y for both compounds, and are able to calculate the fraction atomic mass X/atomic mass Y