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the manufacture of aluminium includes the production of cryolite( Na3ALF6) from the following reaction: 6HF +...

the manufacture of aluminium includes the production of cryolite( Na3ALF6) from the following reaction:
6HF + 3NaAlO2 --> Na3AlF6 + 3H2O + Al203

a) calculate the number of atoms of fluorine in 6.78 grams of cryolite.

b) how many grams of aluminium oxide will be produced if 5.714 moles of NaALO2 are reacted with excess hydrogen fluoride.
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Answer #1

first find the moles and then calculate the no of atoms and from the moles calculate the amount of product formed as follows

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