Dhhdndjdjjdjd
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I'm not quite sure how you would answer this question.
A compound of oxygen and fluorine has a relative molecular mass which is twice that of its
empirical formula mass. 105 g of the compound contains 57g of fluorine.
What is the molecular formula of the compound?
(Ar values: O = 16; F = 19)
The answer is O2F2
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golgiapparatus31
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It contains 57 g of fluorine, so what mass of oxygen does it contain

Find the number of moles of each

Write the empirical formula

Write the molecular formula
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Dhhdndjdjjdjd
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(Original post by golgiapparatus31)
It contains 57 g of fluorine, so what mass of oxygen does it contain

Find the number of moles of each

Write the empirical formula

Write the molecular formula
How would I find the number of moles if I dont know the Mr of the molecules?
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golgiapparatus31
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(Original post by Dhhdndjdjjdjd)
How would I find the number of moles if I dont know the Mr of the molecules?
Moles of oxygen
Moles of fluorine

Not the molecules, the atoms

You can find Ar in periodic table
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