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help chemistry!!!! urgent plz help!!!!!!!

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    Solid FA3 is a mixture of sodium carbonate and sodium chloride, 2 grams of FA3 was dissolved in 250 cm^3 of solution in a volumetric flask. 25 cm^3 of the solution was titrated with 21.4 cm^3 of bydrochloric acid using a suitable indicator.
    Calculate :
    a) the number of moles of sodium carbonate in the 25 cm^3 solution of titrade,
    b) the number of moles of sodium carbonate in the 250 cm^3 solution in the volumetric flask .
    c) the mass of sodium carbonate the 2 gram sample of FA3
    d) percentage by mass of sodium chloride in FA3

    Do you own homework!

    What have you tried so far? What are your thoughts? It seems like a standard calculation. What year are you in?

    I'm also unsure what "bydrochloric acid" is or what a "titrade" is
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