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Chemistry - Stoichiometry

Elements X and fluorine react to form two different compounds. In the first reaction 0.480g of X reacts with 1.000g of F. In the second, 0.960g of X reacts with 1.000g of F. Which are possible formulas for the two compunds
First Compound Second Compound
a)XF X2F2
b)XF2 XF
c)XF2 X2F
d)X2F XF2
e)X2F3 X3F


Dont even know where to start with this.

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Kevin

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