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    What volume of 0.250 mol dm–3 sodium hydroxide solution should be diluted to 1000 cm3 to make
    a 0.0100 mol dm–3 solution?
    A 40 cm3
    B 50 cm3
    C 80 cm3
    D 160 cm3

    Which one??


    (b) In a pilot plant making ammonia, NH3, 200 cm3 of nitrogen are mixed with 300 cm3 of
    hydrogen.
    What would be the final volume (at the same temperature and pressure) if complete
    reaction occurs?

    A 200 cm3
    B 250 cm3
    C 300 cm3
    D 400 cm3
    Your answer

    Which one??

    Help would be much appreciated!
 
 
 
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