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    Stoichiometry and Solute Concentrations

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    I am unsure of how to answer this question, 4.68 in Chemistry: The Central Science 11E

    a) How many grams of solute are present in 50.0 mL of 0.488 M K2Cr2O7?

    b) If 4.00 g of (NH4)2SO4 is dissolved in enough water to form 400 mL of solution, what is the molarity of the solution?

    c) How many millilitres of 0.0250 M CuSO4 contain 1.75 g of solute?

    Could you please show work? And no powerpoints.

    Thanks!

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