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    Chemistry: Stoichiometric sample calculations

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    Hydrofluoric acid,HF (aq) , cannot be stored in glass bottles because compounds called silicates in the glass are attacked by the HF (aq) . Sodium silicate (Na2SiO3), for example, reacts as follows:
    Na2SiO3(s)+8HF(aq)>>H2SiF6(aq)+2NaF(aq)

    - How many moles of HF are needed to react with 0.330 mol of Na2SiO3?

    - How many grams of NaF form when 0.570 mol of HF reacts with excess Na2SiO3?

    - How many grams of Na2SiO3 can react with 0.850g of HF?

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    https://brainmass.com/chemistry/acids-and-bases/chemistry-stoichiometric-sample-calculations-300881

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    The complete balanced reaction is:
    (1.1)

    (a)
    How many moles of HF are needed to react with 0.330 mol of Na2SiO3?
    Answer:
    We see ...

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    The expert examines stoichometric sample calculations.

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